80866056 has 16 divisors (see below), whose sum is σ = 202165200. Its totient is φ = 26955344.

The previous prime is 80866043. The next prime is 80866057. The reversal of 80866056 is 65066808.

It is not an unprimeable number, because it can be changed into a prime (80866057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1684686 + ... + 1684733.

It is an arithmetic number, because the mean of its divisors is an integer number (12635325).

Almost surely, 2^80866056 is an apocalyptic number.

It is an amenable number.

80866056 is an abundant number, since it is smaller than the sum of its proper divisors (121299144).

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

80866056 is a wasteful number, since it uses less digits than its factorization.

80866056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3369428 (or 3369424 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 80866056 is about 8992.5555878182. Note that the first 4 decimals coincide. The cubic root of 80866056 is about 432.4362448484.

The spelling of 80866056 in words is "eighty million, eight hundred sixty-six thousand, fifty-six".