87245631 has 12 divisors (see below), whose sum is σ = 137478120. Its totient is φ = 52876080.

The previous prime is 87245629. The next prime is 87245681. The reversal of 87245631 is 13654278.

It is not a de Polignac number, because 87245631 - 2¹ = 87245629 is a prime.

It is a super-2 number, since 2×87245631² = 15223600257176322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87245611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 440536 + ... + 440733.

It is an arithmetic number, because the mean of its divisors is an integer number (11456510).

Almost surely, 2^87245631 is an apocalyptic number.

87245631 is a deficient number, since it is larger than the sum of its proper divisors (50232489).

87245631 is a wasteful number, since it uses less digits than its factorization.

87245631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881286 (or 881283 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 87245631 is about 9340.5369759988. The cubic root of 87245631 is about 443.5213828399.

The spelling of 87245631 in words is "eighty-seven million, two hundred forty-five thousand, six hundred thirty-one".