79625631 has 4 divisors (see below), whose sum is σ = 106167512. Its totient is φ = 53083752.

The previous prime is 79625629. The next prime is 79625657. The reversal of 79625631 is 13652697.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 79625631 - 2¹ = 79625629 is a prime.

It is a super-2 number, since 2×79625631² = 12680482224296322, which contains 22 as substring.

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 79625631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79625621) 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, 13270936 + ... + 13270941.

It is an arithmetic number, because the mean of its divisors is an integer number (26541878).

Almost surely, 2^79625631 is an apocalyptic number.

79625631 is a deficient number, since it is larger than the sum of its proper divisors (26541881).

79625631 is a wasteful number, since it uses less digits than its factorization.

79625631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26541880.

The product of its digits is 68040, while the sum is 39.

The square root of 79625631 is about 8923.3195056548. The cubic root of 79625631 is about 430.2137588723.

The spelling of 79625631 in words is "seventy-nine million, six hundred twenty-five thousand, six hundred thirty-one".