79565871 has 64 divisors (see below), whose sum is σ = 140378112. Its totient is φ = 38880000.

The previous prime is 79565861. The next prime is 79565887. The reversal of 79565871 is 17856597.

It is not a de Polignac number, because 79565871 - 2⁷ = 79565743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79565871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79565861) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 293466 + ... + 293736.

It is an arithmetic number, because the mean of its divisors is an integer number (2193408).

Almost surely, 2^79565871 is an apocalyptic number.

79565871 is a deficient number, since it is larger than the sum of its proper divisors (60812241).

79565871 is a wasteful number, since it uses less digits than its factorization.

79565871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364.

The product of its digits is 529200, while the sum is 48.

The square root of 79565871 is about 8919.9703474843. The cubic root of 79565871 is about 430.1061050579.

It can be divided in two parts, 795 and 65871, that added together give a palindrome (66666).

The spelling of 79565871 in words is "seventy-nine million, five hundred sixty-five thousand, eight hundred seventy-one".