155,664
155,664 is a composite number, even.
155,664 (one hundred fifty-five thousand six hundred sixty-four) is an even 6-digit number. It is a composite number with 60 divisors, and factors as 2⁴ × 3² × 23 × 47. Its proper divisors sum to 308,592, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x26010.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 27
- Digit product
- 3,600
- Digital root
- 9
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 466,551
- Square (n²)
- 24,231,280,896
- Cube (n³)
- 3,771,938,109,394,944
- Divisor count
- 60
- σ(n) — sum of divisors
- 464,256
- φ(n) — Euler's totient
- 48,576
- Sum of prime factors
- 84
Primality
Prime factorization: 2 4 × 3 2 × 23 × 47
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√155,664 = [394; (1, 1, 5, 2, 1, 9, 17, 1, 4, 1, 9, 31, 2, 6, 34, 6, 2, 31, 9, 1, 4, 1, 17, 9, …)]
Period length 30 — the block in parentheses repeats forever.
Representations
- In words
- one hundred fifty-five thousand six hundred sixty-four
- Ordinal
- 155664th
- Binary
- 100110000000010000
- Octal
- 460020
- Hexadecimal
- 0x26010
- Base64
- AmAQ
- One's complement
- 4,294,811,631 (32-bit)
- Scientific notation
- 1.55664 × 10⁵
- As a duration
- 155,664 s = 1 day, 19 hours, 14 minutes, 24 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρνεχξδʹ
- Mayan (base 20)
- 𝋳·𝋩·𝋣·𝋤
- Chinese
- 一十五萬五千六百六十四
- Chinese (financial)
- 壹拾伍萬伍仟陸佰陸拾肆
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 155664, here are decompositions:
- 7 + 155657 = 155664
- 11 + 155653 = 155664
- 37 + 155627 = 155664
- 43 + 155621 = 155664
- 71 + 155593 = 155664
- 83 + 155581 = 155664
- 107 + 155557 = 155664
- 127 + 155537 = 155664
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A6 80 90 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.96.16.
- Address
- 0.2.96.16
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.96.16
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 155,664 and was likely granted around 1873.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 155664 first appears in π at position 235,487 of the decimal expansion (the 235,487ordinal-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.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.