87470631 has 16 divisors (see below), whose sum is σ = 129830400. Its totient is φ = 58203864.

The previous prime is 87470611. The next prime is 87470653. The reversal of 87470631 is 13607478.

It is not a de Polignac number, because 87470631 - 2⁶ = 87470567 is a prime.

It is a super-2 number, since 2×87470631² = 15302222575076322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87470611) 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, 13090 + ... + 18608.

It is an arithmetic number, because the mean of its divisors is an integer number (8114400).

Almost surely, 2^87470631 is an apocalyptic number.

87470631 is a deficient number, since it is larger than the sum of its proper divisors (42359769).

87470631 is a wasteful number, since it uses less digits than its factorization.

87470631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6115 (or 6109 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 87470631 is about 9352.5734961026. The cubic root of 87470631 is about 443.9023251176.

The spelling of 87470631 in words is "eighty-seven million, four hundred seventy thousand, six hundred thirty-one".