79517656 has 8 divisors (see below), whose sum is σ = 149095620. Its totient is φ = 39758824.

The previous prime is 79517629. The next prime is 79517719. The reversal of 79517656 is 65671597.

It is a happy number.

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

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4969846 + ... + 4969861.

Almost surely, 2^79517656 is an apocalyptic number.

It is an amenable number.

79517656 is a deficient number, since it is larger than the sum of its proper divisors (69577964).

79517656 is a wasteful number, since it uses less digits than its factorization.

79517656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9939713 (or 9939709 counting only the distinct ones).

The product of its digits is 396900, while the sum is 46.

The square root of 79517656 is about 8917.2672944126. The cubic root of 79517656 is about 430.0192095258.

The spelling of 79517656 in words is "seventy-nine million, five hundred seventeen thousand, six hundred fifty-six".