2,664
2,664 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 18
- Digit product
- 288
- Digital root
- 9
- Palindrome
- No
- Bit width
- 12 bits
- Reversed
- 4,662
- Recamán's sequence
- a(7,304) = 2,664
- Square (n²)
- 7,096,896
- Cube (n³)
- 18,906,130,944
- Divisor count
- 24
- σ(n) — sum of divisors
- 7,410
- φ(n) — Euler's totient
- 864
- Sum of prime factors
- 49
Primality
Prime factorization: 2 3 × 3 2 × 37
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- two thousand six hundred sixty-four
- Ordinal
- 2664th
- Roman numeral
- MMDCLXIV
- Binary
- 101001101000
- Octal
- 5150
- Hexadecimal
- 0xA68
- Base64
- Cmg=
- One's complement
- 62,871 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵βχξδʹ
- Mayan (base 20)
- 𝋦·𝋭·𝋤
- Chinese
- 二千六百六十四
- Chinese (financial)
- 貳仟陸佰陸拾肆
Digit at this position in famous constants
- π — Pi (π)
- Digit 2,664 = 6
- e — Euler's number (e)
- Digit 2,664 = 2
- φ — Golden ratio (φ)
- Digit 2,664 = 3
- √2 — Pythagoras's (√2)
- Digit 2,664 = 4
- ln 2 — Natural log of 2
- Digit 2,664 = 0
- γ — Euler-Mascheroni (γ)
- Digit 2,664 = 8
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 2664, here are decompositions:
- 5 + 2659 = 2664
- 7 + 2657 = 2664
- 17 + 2647 = 2664
- 31 + 2633 = 2664
- 43 + 2621 = 2664
- 47 + 2617 = 2664
- 71 + 2593 = 2664
- 73 + 2591 = 2664
Showing the first eight; more decompositions exist.
UTF-8 encoding: E0 A9 A8 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.10.104.
- Address
- 0.0.10.104
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.10.104
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 2664 first appears in π at position 275 of the decimal expansion (the 275ordinal-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.