Number

2,061

2,061 is a composite number, odd, a calendar year.

2,061 (two thousand sixty-one) is an odd 4-digit number. It is a composite number with 6 divisors, and factors as 3² × 229. Written other ways, in Roman numerals it is MMLXI and in binary, 100000001101.

Cube-Free Deficient Number Evil Number Harshad / Niven Moran Number Recamán's Sequence Year

Interestingness

★ ★ ☆ ☆ ☆

4 notable facts · grade D

2,049 2,050 2,051 2,052 2,053 2,054 2,055 2,056 2,057 2,058 2,059 2,060 2,061 2,062 2,063 2,064 2,065 2,066 2,067 2,068 2,069 2,070 2,071 2,072 2,073

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Historical context — 2061 AD

Current millennium spanning the years 2001 to 3000

The third millennium of the Anno Domini or Common Era is the current millennium spanning the years 2001 to 3000.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 Read the full article on Wikipedia →

Year facts

Year type: Common year
Standard 365-day year; not divisible by 4 (or divisible by 100 but not 400).
Days in year: 365
ISO weeks: 52
Started on: Saturday
January 1, 2061
Ended on: Saturday
December 31, 2061
Friday the 13ths: 1
One Friday the 13th this year.
Easter Sunday: April 10
Sunday, April 10, 2061
Decade: 2060s
2060–2069
Century: 21st century
2001–2100
Millennium: 3rd millennium
2001–3000
Years until: 35
35 years after 2026.

In other calendars

Hebrew: 5821 / 5822 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 1483 / 1484 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Metal zodiac:Snake
Sexagenary cycle position 18 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 2604 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 1439 / 1440 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 2053 / 2054 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 1983 / 1982 Saka
Indian national calendar; year starts in March.
Japanese: Reiwa 43
Reign-era counting from the start of each emperor's reign.

Properties

Parity: Odd
Digit count: 4
Digit sum: 9
Digit product: 0
Digital root: 9
Palindrome: No
Bit width: 12 bits
Reversed: 1,602
Recamán's sequence: a(3,629) = 2,061
Square (n²): 4,247,721
Cube (n³): 8,754,552,981
Divisor count: 6
σ(n) — sum of divisors: 2,990
φ(n) — Euler's totient: 1,368
Sum of prime factors: 235

Primality

Prime factorization: 3 ² × 229

Nearest primes: 2,053 (−8) · 2,063 (+2)

Divisors & multiples

All divisors (6)

1 · 3 · 9 · 229 · 687 · 2061

Aliquot sum (sum of proper divisors): 929

Factor pairs (a × b = 2,061)

1 × 2061

3 × 687

9 × 229

First multiples

2,061 · 4,122 (double) · 6,183 · 8,244 · 10,305 · 12,366 · 14,427 · 16,488 · 18,549 · 20,610

Sums & aliquot sequence

As a sum of two squares: 6² + 45²

As consecutive integers: 1,030 + 1,031 686 + 687 + 688 341 + 342 + 343 + 344 + 345 + 346 225 + 226 + … + 233

Aliquot sequence: 2,061 → 929 → 1 → 0 — terminates at zero

Continued fraction of √n

√2,061 = [45; (2, 1, 1, 22, 10, 22, 1, 1, 2, 90)]

Period length 10 — the block in parentheses repeats forever.

Representations

In words: two thousand sixty-one
Ordinal: 2061st
Roman numeral: MMLXI
Binary: 100000001101
Octal: 4015
Hexadecimal: 0x80D
Base64: CA0=
One's complement: 63,474 (16-bit)
Scientific notation: 2.061 × 10³
As a duration: 2,061 s = 34 minutes, 21 seconds

In other bases

ternary (3) 2211100

quaternary (4) 200031

quinary (5) 31221

senary (6) 13313

septenary (7) 6003

nonary (9) 2740

undecimal (11) 1604

duodecimal (12) 1239

tridecimal (13) c27

tetradecimal (14) a73

pentadecimal (15) 926

As an angle

2,061° = 5 × 360° + 261°

261° ≈ 4.555 rad

Compass bearing: W (west)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒁹
Egyptian hieroglyphic: 𓆼𓆼𓎆𓎆𓎆𓎆𓎆𓎆𓏺
Greek (Milesian): ͵βξαʹ
Mayan (base 20): 𝋥·𝋣·𝋡
Chinese: 二千零六十一
Chinese (financial): 貳仟零陸拾壹

In other modern scripts

Eastern Arabic ٢٠٦١ Devanagari २०६१ Bengali ২০৬১ Tamil ௨௦௬௧ Thai ๒๐๖๑ Tibetan ༢༠༦༡ Khmer ២០៦១ Lao ໒໐໖໑ Burmese ၂၀၆၁

Digit at this position in famous constants

π — Pi (π): Digit 2,061 = 6
e — Euler's number (e): Digit 2,061 = 6
φ — Golden ratio (φ): Digit 2,061 = 6
√2 — Pythagoras's (√2): Digit 2,061 = 7
ln 2 — Natural log of 2: Digit 2,061 = 0
γ — Euler-Mascheroni (γ): Digit 2,061 = 9

Also seen as

Unicode codepoint

ࠍ

Samaritan Letter Nun

U+080D

Other letter (Lo)

UTF-8 encoding: E0 A0 8D (3 bytes).

Lookup U+080D on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#00080D

RGB(0, 8, 13)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.8.13.

Address: 0.0.8.13
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.8.13

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Musical pitch

Heard as a frequency, 2,061 Hz is closest to:

Concert pitch (A4 = 440 Hz): C7 (2093 Hz, -27¢)
Scientific pitch (C4 = 256 Hz): C7 (2048 Hz, +11¢)
Baroque pitch (A4 = 415 Hz): C♯7 (2091.5 Hz, -25¢)

Position in π

The digit sequence 2061 first appears in π at position 884 of the decimal expansion (the 884ordinal-suffix:th digit after the integer 3).

Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.

Look up 2061 on Pi Search ↗