79876815 has 32 divisors (see below), whose sum is σ = 136636416. Its totient is φ = 39747840.

The previous prime is 79876807. The next prime is 79876837. The reversal of 79876815 is 51867897.

It is not a de Polignac number, because 79876815 - 2³ = 79876807 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11322 + ... + 16968.

It is an arithmetic number, because the mean of its divisors is an integer number (4269888).

Almost surely, 2^79876815 is an apocalyptic number.

79876815 is a deficient number, since it is larger than the sum of its proper divisors (56759601).

79876815 is a wasteful number, since it uses less digits than its factorization.

79876815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5719.

The product of its digits is 846720, while the sum is 51.

The square root of 79876815 is about 8937.3830062273. The cubic root of 79876815 is about 430.6656626956.

The spelling of 79876815 in words is "seventy-nine million, eight hundred seventy-six thousand, eight hundred fifteen".