Number

693

693 is a composite number, odd, a calendar year.

Arithmetic Number Deficient Number Evil Number Gapful Number Recamán's Sequence Year

Historical context — 693 AD

Calendar year

Year 693 (DCXCIII) was a common year starting on Wednesday of the Julian calendar.

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

Historical context — 693 BC

Decade

This article concerns the period 699 BC – 690 BC.

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: Sunday
January 1, 693
Ended on: Sunday
December 31, 693
Friday the 13ths: 2
2 Friday the 13ths this year.
Decade: 690s
690–699
Century: 7th century
601–700
Millennium: 1st millennium
1–1000
Years ago: 1,333
1333 years before 2026.

In other calendars

Hebrew: 4453 / 4454 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 73 / 74 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Water zodiac:Snake
Sexagenary cycle position 30 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1236 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 71 / 72 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 685 / 686 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 615 / 614 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 18
Digit product: 162
Digital root: 9
Palindrome: No
Bit width: 10 bits
Reversed: 396
Recamán's sequence: a(2,238) = 693
Square (n²): 480,249
Cube (n³): 332,812,557
Divisor count: 12
σ(n) — sum of divisors: 1,248
φ(n) — Euler's totient: 360
Sum of prime factors: 24

Primality

Prime factorization: 3 ² × 7 × 11

Nearest primes: 691 (−2) · 701 (+8)

Divisors & multiples

All divisors (12)

1 · 3 · 7 · 9 · 11 · 21 · 33 · 63 · 77 · 99 · 231 · 693

Aliquot sum (sum of proper divisors): 555

Factor pairs (a × b = 693)

1 × 693

3 × 231

7 × 99

9 × 77

11 × 63

21 × 33

First multiples

693 · 1,386 (double) · 2,079 · 2,772 · 3,465 · 4,158 · 4,851 · 5,544 · 6,237 · 6,930

Sums & aliquot sequence

As consecutive integers: 346 + 347 230 + 231 + 232 113 + 114 + 115 + 116 + 117 + 118 96 + 97 + … + 102

Aliquot sequence: 693 → 555 → 357 → 219 → 77 → 19 → 1 → 0 — terminates at zero

Representations

In words: six hundred ninety-three
Ordinal: 693rd
Roman numeral: DCXCIII
Binary: 1010110101
Octal: 1265
Hexadecimal: 0x2B5
Base64: ArU=
One's complement: 64,842 (16-bit)

In other bases

ternary (3) 221200

quaternary (4) 22311

quinary (5) 10233

senary (6) 3113

septenary (7) 2010

nonary (9) 850

undecimal (11) 580

duodecimal (12) 499

tridecimal (13) 414

tetradecimal (14) 377

pentadecimal (15) 313

Historical numeral systems

Babylonian (base 60): 𒌋𒁹 𒌋𒌋𒌋𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺
Greek (Milesian): χϟγʹ
Mayan (base 20): 𝋡·𝋮·𝋭
Chinese: 六百九十三
Chinese (financial): 陸佰玖拾參

In other modern scripts

Eastern Arabic ٦٩٣ Devanagari ६९३ Bengali ৬৯৩ Tamil ௬௯௩ Thai ๖๙๓ Tibetan ༦༩༣ Khmer ៦៩៣ Lao ໖໙໓ Burmese ၆၉၃

Digit at this position in famous constants

π — Pi (π): Digit 693 = 8
e — Euler's number (e): Digit 693 = 6
φ — Golden ratio (φ): Digit 693 = 4
√2 — Pythagoras's (√2): Digit 693 = 1
ln 2 — Natural log of 2: Digit 693 = 8
γ — Euler-Mascheroni (γ): Digit 693 = 3

Also seen as

Unicode codepoint

Modifier Letter Small Turned R With Hook

U+02B5

Modifier letter (Lm)

UTF-8 encoding: CA B5 (2 bytes).

Lookup U+02B5 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0002B5

RGB(0, 2, 181)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.2.181.

Address: 0.0.2.181
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.2.181

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