79973564 has 12 divisors (see below), whose sum is σ = 152676888. Its totient is φ = 36351600.

The previous prime is 79973557. The next prime is 79973567. The reversal of 79973564 is 46537997.

79973564 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

79973564 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79973567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 908747 + ... + 908834.

It is an arithmetic number, because the mean of its divisors is an integer number (12723074).

Almost surely, 2^79973564 is an apocalyptic number.

It is an amenable number.

79973564 is a deficient number, since it is larger than the sum of its proper divisors (72703324).

79973564 is a wasteful number, since it uses less digits than its factorization.

79973564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817596 (or 1817594 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 50.

The square root of 79973564 is about 8942.7939705665. The cubic root of 79973564 is about 430.8394705812.

The spelling of 79973564 in words is "seventy-nine million, nine hundred seventy-three thousand, five hundred sixty-four".