Number
618
618 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 3
- Digit sum
- 15
- Digital root
- 6
- Palindrome
- No
- Divisor count
- 8
- σ(n) — sum of divisors
- 1,248
Primality
Prime factorization: 2 × 3 × 103
Divisors & multiples
Aliquot sum (sum of proper divisors):
630
Representations
- In words
- six hundred eighteen
- Ordinal
- 618th
- Roman numeral
- DCXVIII
- Binary
- 1001101010
- Octal
- 1152
- Hexadecimal
- 26A
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 618, here are decompositions:
- 5 + 613 = 618
- 11 + 607 = 618
- 17 + 601 = 618
- 19 + 599 = 618
- 31 + 587 = 618
- 41 + 577 = 618
- 47 + 571 = 618
- 61 + 557 = 618
Showing the first eight; more decompositions exist.
Unicode codepoint
ɪ
U+026A
Lowercase letter (Ll)
UTF-8 encoding: C9 AA (2 bytes).
Hex color
#00026A
RGB(0, 2, 106)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.2.106.