80856 has 24 divisors (see below), whose sum is σ = 219180. Its totient is φ = 26928.

The previous prime is 80849. The next prime is 80863. The reversal of 80856 is 65808.

It is an interprime number because it is at equal distance from previous prime (80849) and next prime (80863).

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 80856.

It is an unprimeable number.

80856 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 490 + ... + 633.

2⁸⁰⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

80856 is an abundant number, since it is smaller than the sum of its proper divisors (138324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80856 is a wasteful number, since it uses less digits than its factorization.

80856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135 (or 1128 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 80856 is about 284.3518946657. The cubic root of 80856 is about 43.2418319078.

The spelling of 80856 in words is "eighty thousand, eight hundred fifty-six".