80790856 has 8 divisors (see below), whose sum is σ = 151482870. Its totient is φ = 40395424.

The previous prime is 80790841. The next prime is 80790877. The reversal of 80790856 is 65809708.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 43164900 + 37625956 = 6570^2 + 6134^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5049421 + ... + 5049436.

Almost surely, 2^80790856 is an apocalyptic number.

It is an amenable number.

80790856 is a deficient number, since it is larger than the sum of its proper divisors (70692014).

80790856 is a wasteful number, since it uses less digits than its factorization.

80790856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10098863 (or 10098859 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 80790856 is about 8988.3733789824. The cubic root of 80790856 is about 432.3021577227.

The spelling of 80790856 in words is "eighty million, seven hundred ninety thousand, eight hundred fifty-six".