79647636 has 12 divisors (see below), whose sum is σ = 185844512. Its totient is φ = 26549208.

The previous prime is 79647629. The next prime is 79647683. The reversal of 79647636 is 63674697.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3318640 + ... + 3318663.

Almost surely, 2^79647636 is an apocalyptic number.

It is an amenable number.

79647636 is an abundant number, since it is smaller than the sum of its proper divisors (106196876).

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

79647636 is a wasteful number, since it uses less digits than its factorization.

79647636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6637310 (or 6637308 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 48.

The square root of 79647636 is about 8924.5524257522. The cubic root of 79647636 is about 430.2533859024.

The spelling of 79647636 in words is "seventy-nine million, six hundred forty-seven thousand, six hundred thirty-six".