79976765 has 24 divisors (see below), whose sum is σ = 106268064. Its totient is φ = 57736800.

The previous prime is 79976737. The next prime is 79976779. The reversal of 79976765 is 56767997.

It is not a de Polignac number, because 79976765 - 2⁸ = 79976509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79976765.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98210 + ... + 99020.

It is an arithmetic number, because the mean of its divisors is an integer number (4427836).

Almost surely, 2^79976765 is an apocalyptic number.

It is an amenable number.

79976765 is a deficient number, since it is larger than the sum of its proper divisors (26291299).

79976765 is a wasteful number, since it uses less digits than its factorization.

79976765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001 (or 990 counting only the distinct ones).

The product of its digits is 5000940, while the sum is 56.

The square root of 79976765 is about 8942.9729396885. The cubic root of 79976765 is about 430.8452187255.

The spelling of 79976765 in words is "seventy-nine million, nine hundred seventy-six thousand, seven hundred sixty-five".