76913631 has 24 divisors (see below), whose sum is σ = 115699584. Its totient is φ = 51059160.

The previous prime is 76913609. The next prime is 76913671. The reversal of 76913631 is 13631967.

76913631 is a `hidden beast` number, since 7 + 6 + 9 + 13 + 631 = 666.

It is not a de Polignac number, because 76913631 - 2⁶ = 76913567 is a prime.

It is a super-2 number, since 2×76913631² = 11831413267208322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76913671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74086 + ... + 75116.

It is an arithmetic number, because the mean of its divisors is an integer number (4820816).

Almost surely, 2^76913631 is an apocalyptic number.

76913631 is a deficient number, since it is larger than the sum of its proper divisors (38785953).

76913631 is a wasteful number, since it uses less digits than its factorization.

76913631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353 (or 1341 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 76913631 is about 8770.0416760697. The cubic root of 76913631 is about 425.2729614432.

It can be divided in two parts, 769 and 13631, that added together give a square (14400 = 120²).

The spelling of 76913631 in words is "seventy-six million, nine hundred thirteen thousand, six hundred thirty-one".