998,561
998,561 is a prime, odd.
998,561 (nine hundred ninety-eight thousand five hundred sixty-one) is an odd 6-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0xF3CA1.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 38
- Digit product
- 19,440
- Digital root
- 2
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 165,899
- Square (n²)
- 997,124,070,721
- Cube (n³)
- 995,689,209,183,232,481
- Divisor count
- 2
- σ(n) — sum of divisors
- 998,562
- φ(n) — Euler's totient
- 998,560
Primality
998,561 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√998,561 = [999; (3, 1, 1, 3, 6, 2, 1, 3, 1, 1, 5, 2, 10, 1, 25, 23, 2, 9, 13, 1, 2, 9, 1, 1, …)]
Representations
- In words
- nine hundred ninety-eight thousand five hundred sixty-one
- Ordinal
- 998561st
- Binary
- 11110011110010100001
- Octal
- 3636241
- Hexadecimal
- 0xF3CA1
- Base64
- Dzyh
- One's complement
- 4,293,968,734 (32-bit)
- Scientific notation
- 9.98561 × 10⁵
- As a duration
- 998,561 s = 11 days, 13 hours, 22 minutes, 41 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺
- Greek (Milesian)
- ͵ϡϟηφξαʹ
- Chinese
- 九十九萬八千五百六十一
- Chinese (financial)
- 玖拾玖萬捌仟伍佰陸拾壹
Also seen as
As an unsigned 32-bit integer, this is the IPv4 address 0.15.60.161.
- Address
- 0.15.60.161
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.60.161
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 998,561 and was likely granted around 1911.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 998561 first appears in π at position 215,074 of the decimal expansion (the 215,074ordinal-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
- 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.