87488631 has 6 divisors (see below), whose sum is σ = 126372480. Its totient is φ = 58325748.

The previous prime is 87488593. The next prime is 87488641. The reversal of 87488631 is 13688478.

87488631 is a `hidden beast` number, since 8 + 7 + 4 + 8 + 8 + 631 = 666.

It is not a de Polignac number, because 87488631 - 2⁶ = 87488567 is a prime.

It is a super-2 number, since 2×87488631² = 15308521108508322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87488641) 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 5 ways as a sum of consecutive naturals, for example, 4860471 + ... + 4860488.

It is an arithmetic number, because the mean of its divisors is an integer number (21062080).

Almost surely, 2^87488631 is an apocalyptic number.

87488631 is a deficient number, since it is larger than the sum of its proper divisors (38883849).

87488631 is a wasteful number, since it uses less digits than its factorization.

87488631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9720965 (or 9720962 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 87488631 is about 9353.5357485819. The cubic root of 87488631 is about 443.9327722659.

The spelling of 87488631 in words is "eighty-seven million, four hundred eighty-eight thousand, six hundred thirty-one".