79712064 has 42 divisors (see below), whose sum is σ = 228481890. Its totient is φ = 26570496.

The previous prime is 79712057. The next prime is 79712069. The reversal of 79712064 is 46021797.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 48441600 + 31270464 = 6960^2 + 5592^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79712069) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68619 + ... + 69770.

It is an arithmetic number, because the mean of its divisors is an integer number (5440045).

Almost surely, 2^79712064 is an apocalyptic number.

It is an amenable number.

79712064 is an abundant number, since it is smaller than the sum of its proper divisors (148769826).

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

79712064 is a wasteful number, since it uses less digits than its factorization.

79712064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138407 (or 138394 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 79712064 is about 8928.1612888657. The cubic root of 79712064 is about 430.3693671394.

The spelling of 79712064 in words is "seventy-nine million, seven hundred twelve thousand, sixty-four".