79677664 has 24 divisors (see below), whose sum is σ = 171126648. Its totient is φ = 36216960.

The previous prime is 79677569. The next prime is 79677679. The reversal of 79677664 is 46677697.

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, 112827 + ... + 113530.

It is an arithmetic number, because the mean of its divisors is an integer number (7130277).

Almost surely, 2^79677664 is an apocalyptic number.

It is an amenable number.

79677664 is an abundant number, since it is smaller than the sum of its proper divisors (91448984).

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

79677664 is a wasteful number, since it uses less digits than its factorization.

79677664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226378 (or 226370 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 52.

The square root of 79677664 is about 8926.2345924808. The cubic root of 79677664 is about 430.3074491324.

The spelling of 79677664 in words is "seventy-nine million, six hundred seventy-seven thousand, six hundred sixty-four".