79638688 has 12 divisors (see below), whose sum is σ = 156788730. Its totient is φ = 39819328.

The previous prime is 79638677. The next prime is 79638697. The reversal of 79638688 is 88683697.

It can be written as a sum of positive squares in only one way, i.e., 60031504 + 19607184 = 7748^2 + 4428^2 .

It is a super-2 number, since 2×79638688² = 12684641252722688, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1244323 + ... + 1244386.

Almost surely, 2^79638688 is an apocalyptic number.

It is an amenable number.

79638688 is a deficient number, since it is larger than the sum of its proper divisors (77150042).

79638688 is a wasteful number, since it uses less digits than its factorization.

79638688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2488719 (or 2488711 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 55.

The square root of 79638688 is about 8924.0510980160. The cubic root of 79638688 is about 430.2372730513.

The spelling of 79638688 in words is "seventy-nine million, six hundred thirty-eight thousand, six hundred eighty-eight".