number.wiki
Number

677

677 is a prime, odd, a calendar year.

Cousin Prime Deficient Number Prime Sexy Prime Squarefree Year

Properties

Parity
Odd
Digit count
3
Digit sum
20
Digital root
2
Palindrome
No
Divisor count
2
σ(n) — sum of divisors
678

Primality

677 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 677
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 677)
1 × 677
First multiples
677 · 1,354 · 2,031 · 2,708 · 3,385 · 4,062 · 4,739 · 5,416 · 6,093 · 6,770

Representations

In words
six hundred seventy-seven
Ordinal
677th
Roman numeral
DCLXXVII
Binary
1010100101
Octal
1245
Hexadecimal
2A5

Also seen as

Prime neighborhood

Adjacent primes:

  • Previous prime: 673 (gap of 4)
  • Next prime: 683 (gap of 6)

Pair status: cousin with 673, sexy with 683.

Unicode codepoint
ʥ
U+02A5
Lowercase letter (Ll)

UTF-8 encoding: CA A5 (2 bytes).

Hex color
#0002A5
RGB(0, 2, 165)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.2.165.