76427631 has 56 divisors (see below), whose sum is σ = 138819744. Its totient is φ = 41057280.

The previous prime is 76427599. The next prime is 76427647. The reversal of 76427631 is 13672467.

76427631 is a `hidden beast` number, since 7 + 642 + 7 + 6 + 3 + 1 = 666.

It is not a de Polignac number, because 76427631 - 2⁵ = 76427599 is a prime.

It is a super-2 number, since 2×76427631² = 11682365560544322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76427831) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 86311 + ... + 87191.

It is an arithmetic number, because the mean of its divisors is an integer number (2478924).

Almost surely, 2^76427631 is an apocalyptic number.

76427631 is a deficient number, since it is larger than the sum of its proper divisors (62392113).

76427631 is an equidigital number, since it uses as much as digits as its factorization.

76427631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923 (or 908 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 76427631 is about 8742.2898030207. The cubic root of 76427631 is about 424.3753332926.

The spelling of 76427631 in words is "seventy-six million, four hundred twenty-seven thousand, six hundred thirty-one".