79963631 has 16 divisors (see below), whose sum is σ = 92752128. Its totient is φ = 68131200.

The previous prime is 79963627. The next prime is 79963649. The reversal of 79963631 is 13636997.

79963631 = 56² + 57² + ... + 621².

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 79963631 - 2² = 79963627 is a prime.

It is a super-2 number, since 2×79963631² = 12788364565408322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79963661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52166 + ... + 53676.

It is an arithmetic number, because the mean of its divisors is an integer number (5797008).

Almost surely, 2^79963631 is an apocalyptic number.

79963631 is a deficient number, since it is larger than the sum of its proper divisors (12788497).

79963631 is a wasteful number, since it uses less digits than its factorization.

79963631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822.

The product of its digits is 183708, while the sum is 44.

The square root of 79963631 is about 8942.2385899729. The cubic root of 79963631 is about 430.8216325798.

The spelling of 79963631 in words is "seventy-nine million, nine hundred sixty-three thousand, six hundred thirty-one".