76865 has 4 divisors (see below), whose sum is σ = 92244. Its totient is φ = 61488.

The previous prime is 76847. The next prime is 76871. The reversal of 76865 is 56867.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10816 + 66049 = 104^2 + 257^2 .

It is a cyclic number.

It is not a de Polignac number, because 76865 - 2⁶ = 76801 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7682 + ... + 7691.

It is an arithmetic number, because the mean of its divisors is an integer number (23061).

2⁷⁶⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

76865 is a deficient number, since it is larger than the sum of its proper divisors (15379).

76865 is a wasteful number, since it uses less digits than its factorization.

76865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15378.

The product of its digits is 10080, while the sum is 32.

The square root of 76865 is about 277.2453786811. The cubic root of 76865 is about 42.5183311926.

The spelling of 76865 in words is "seventy-six thousand, eight hundred sixty-five".