77915056 has 40 divisors (see below), whose sum is σ = 155205344. Its totient is φ = 37877760.

The previous prime is 77915039. The next prime is 77915069. The reversal of 77915056 is 65051977.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94261 + ... + 95083.

Almost surely, 2^77915056 is an apocalyptic number.

It is an amenable number.

77915056 is a deficient number, since it is larger than the sum of its proper divisors (77290288).

77915056 is a wasteful number, since it uses less digits than its factorization.

77915056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989 (or 983 counting only the distinct ones).

The product of its (nonzero) digits is 66150, while the sum is 40.

The square root of 77915056 is about 8826.9505493120. The cubic root of 77915056 is about 427.1107106707.

The spelling of 77915056 in words is "seventy-seven million, nine hundred fifteen thousand, fifty-six".