998,687
998,687 is a prime, odd.
998,687 (nine hundred ninety-eight thousand six hundred eighty-seven) is an odd 6-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0xF3D1F.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 47
- Digit product
- 217,728
- Digital root
- 2
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 786,899
- Square (n²)
- 997,375,723,969
- Cube (n³)
- 996,066,169,643,428,703
- Divisor count
- 2
- σ(n) — sum of divisors
- 998,688
- φ(n) — Euler's totient
- 998,686
Primality
998,687 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√998,687 = [999; (2, 1, 10, 2, 285, 20, 2, 1, 1, 3, 1, 40, 142, 1, 2, 1, 4, 1, 5, 999, 5, 1, 4, 1, …)]
Period length 40 — the block in parentheses repeats forever.
Representations
- In words
- nine hundred ninety-eight thousand six hundred eighty-seven
- Ordinal
- 998687th
- Binary
- 11110011110100011111
- Octal
- 3636437
- Hexadecimal
- 0xF3D1F
- Base64
- Dz0f
- One's complement
- 4,293,968,608 (32-bit)
- Scientific notation
- 9.98687 × 10⁵
- As a duration
- 998,687 s = 11 days, 13 hours, 24 minutes, 47 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ϡϟηχπζʹ
- Chinese
- 九十九萬八千六百八十七
- Chinese (financial)
- 玖拾玖萬捌仟陸佰捌拾柒
Also seen as
As an unsigned 32-bit integer, this is the IPv4 address 0.15.61.31.
- Address
- 0.15.61.31
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.61.31
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 998,687 and was likely granted around 1911.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.