Number
65
65 is a composite number, odd, a calendar year.
Properties
- Parity
- Odd
- Digit count
- 2
- Digit sum
- 11
- Digital root
- 2
- Palindrome
- No
- Divisor count
- 4
- σ(n) — sum of divisors
- 84
Primality
Prime factorization: 5 × 13
Divisors & multiples
Aliquot sum (sum of proper divisors):
19
Representations
- In words
- sixty-five
- Ordinal
- 65th
- Roman numeral
- LXV
- Binary
- 1000001
- Octal
- 101
- Hexadecimal
- 41
Also seen as
ASCII character
As an ASCII codepoint, 65 is A. Printable ASCII character A.
Hex color
#000041
RGB(0, 0, 65)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.65.