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Number

61,987

61,987 is a prime, odd.

Cousin Prime Deficient Number Prime Sexy Prime Squarefree

Properties

Parity
Odd
Digit count
5
Digit sum
31
Digital root
4
Palindrome
No
Divisor count
2
σ(n) — sum of divisors
61,988

Primality

61,987 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 61987
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 61,987)
1 × 61987
First multiples
61,987 · 123,974 · 185,961 · 247,948 · 309,935 · 371,922 · 433,909 · 495,896 · 557,883 · 619,870

Representations

In words
sixty-one thousand nine hundred eighty-seven
Ordinal
61987th
Binary
1111001000100011
Octal
171043
Hexadecimal
F223

Also seen as

Prime neighborhood

Adjacent primes:

  • Previous prime: 61,981 (gap of 6)
  • Next prime: 61,991 (gap of 4)

Pair status: cousin with 61991, sexy with 61981.

Hex color
#00F223
RGB(0, 242, 35)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.242.35.