Number

659

659 is a prime, odd, a calendar year.

Arithmetic Number Chen Prime Deficient Number Odious Number Pernicious Number Prime Recamán's Sequence Self Number Sexy Prime Sophie Germain Prime Squarefree Twin Prime Year

Historical context — 659 AD

Calendar year

Year 659 (DCLIX) was a common year starting on Tuesday of the Julian calendar.

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Historical context — 659 BC

Calendar year

The year 659 BC was a year of the pre-Julian Roman calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 · English fallback 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, 659
Ended on: Saturday
December 31, 659
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 650s
650–659
Century: 7th century
601–700
Millennium: 1st millennium
1–1000
Years ago: 1,367
1367 years before 2026.

In other calendars

Hebrew: 4419 / 4420 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 38 / 39 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Earth zodiac:Goat
Sexagenary cycle position 56 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1202 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 37 / 38 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 651 / 652 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 581 / 580 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 20
Digit product: 270
Digital root: 2
Palindrome: No
Bit width: 10 bits
Reversed: 956
Recamán's sequence: a(2,306) = 659
Square (n²): 434,281
Cube (n³): 286,191,179
Divisor count: 2
σ(n) — sum of divisors: 660
φ(n) — Euler's totient: 658

Primality

659 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)

1 · 659

Aliquot sum (sum of proper divisors): 1

Factor pairs (a × b = 659)

1 × 659

First multiples

659 · 1,318 (double) · 1,977 · 2,636 · 3,295 · 3,954 · 4,613 · 5,272 · 5,931 · 6,590

Sums & aliquot sequence

As consecutive integers: 329 + 330

Representations

In words: six hundred fifty-nine
Ordinal: 659th
Roman numeral: DCLIX
Binary: 1010010011
Octal: 1223
Hexadecimal: 0x293
Base64: ApM=
One's complement: 64,876 (16-bit)

In other bases

ternary (3) 220102

quaternary (4) 22103

quinary (5) 10114

senary (6) 3015

septenary (7) 1631

nonary (9) 812

undecimal (11) 54a

duodecimal (12) 46b

tridecimal (13) 3b9

tetradecimal (14) 351

pentadecimal (15) 2de

Historical numeral systems

Babylonian (base 60): 𒌋 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): χνθʹ
Mayan (base 20): 𝋡·𝋬·𝋳
Chinese: 六百五十九
Chinese (financial): 陸佰伍拾玖

In other modern scripts

Eastern Arabic ٦٥٩ Devanagari ६५९ Bengali ৬৫৯ Tamil ௬௫௯ Thai ๖๕๙ Tibetan ༦༥༩ Khmer ៦៥៩ Lao ໖໕໙ Burmese ၆၅၉

Digit at this position in famous constants

π — Pi (π): Digit 659 = 9
e — Euler's number (e): Digit 659 = 3
φ — Golden ratio (φ): Digit 659 = 5
√2 — Pythagoras's (√2): Digit 659 = 1
ln 2 — Natural log of 2: Digit 659 = 4
γ — Euler-Mascheroni (γ): Digit 659 = 8

Also seen as

Prime neighborhood

Adjacent primes:

Previous prime: 653 (gap of 6)
Next prime: 661 (gap of 2)

Pair status: twin with 661, sexy with 653.

Unicode codepoint

Latin Small Letter Ezh With Curl

U+0293

Lowercase letter (Ll)

UTF-8 encoding: CA 93 (2 bytes).

Lookup U+0293 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000293

RGB(0, 2, 147)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.2.147.

Address: 0.0.2.147
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.2.147

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