12,664
12,664 is a composite number, even.
12,664 (twelve thousand six hundred sixty-four) is an even 5-digit number. It is a composite number with 8 divisors, and factors as 2³ × 1,583. Written other ways, in hexadecimal, 0x3178.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 19
- Digit product
- 288
- Digital root
- 1
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 46,621
- Recamán's sequence
- a(48,947) = 12,664
- Square (n²)
- 160,376,896
- Cube (n³)
- 2,031,013,010,944
- Divisor count
- 8
- σ(n) — sum of divisors
- 23,760
- φ(n) — Euler's totient
- 6,328
- Sum of prime factors
- 1,589
Primality
Prime factorization: 2 3 × 1583
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√12,664 = [112; (1, 1, 6, 1, 3, 6, 1, 1, 3, 1, 1, 4, 31, 1, 14, 28, 14, 1, 31, 4, 1, 1, 3, 1, …)]
Period length 32 — the block in parentheses repeats forever.
Representations
- In words
- twelve thousand six hundred sixty-four
- Ordinal
- 12664th
- Binary
- 11000101111000
- Octal
- 30570
- Hexadecimal
- 0x3178
- Base64
- MXg=
- One's complement
- 52,871 (16-bit)
- Scientific notation
- 1.2664 × 10⁴
- As a duration
- 12,664 s = 3 hours, 31 minutes, 4 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒁹 𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ιβχξδʹ
- Mayan (base 20)
- 𝋡·𝋫·𝋭·𝋤
- Chinese
- 一萬二千六百六十四
- Chinese (financial)
- 壹萬貳仟陸佰陸拾肆
Digit at this position in famous constants
- π — Pi (π)
- Digit 12,664 = 7
- e — Euler's number (e)
- Digit 12,664 = 9
- φ — Golden ratio (φ)
- Digit 12,664 = 2
- √2 — Pythagoras's (√2)
- Digit 12,664 = 9
- ln 2 — Natural log of 2
- Digit 12,664 = 2
- γ — Euler-Mascheroni (γ)
- Digit 12,664 = 9
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 12664, here are decompositions:
- 5 + 12659 = 12664
- 11 + 12653 = 12664
- 17 + 12647 = 12664
- 23 + 12641 = 12664
- 53 + 12611 = 12664
- 137 + 12527 = 12664
- 167 + 12497 = 12664
- 173 + 12491 = 12664
Showing the first eight; more decompositions exist.
UTF-8 encoding: E3 85 B8 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.49.120.
- Address
- 0.0.49.120
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.49.120
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 12,664 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G9 (12543.9 Hz, +17¢)
- Scientific pitch (C4 = 256 Hz): G♯9 (13004 Hz, -46¢ — about midway to G9)
- Baroque pitch (A4 = 415 Hz): G♯9 (12534.7 Hz, +18¢)
The digit sequence 12664 first appears in π at position 710,442 of the decimal expansion (the 710,442ordinal-suffix:nd 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.
Related reading
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.