87988871 has 16 divisors (see below), whose sum is σ = 93506400. Its totient is φ = 82672128.

The previous prime is 87988861. The next prime is 87988897. The reversal of 87988871 is 17888978.

It is a cyclic number.

It is not a de Polignac number, because 87988871 - 2²² = 83794567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87988801) 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, 188180 + ... + 188646.

It is an arithmetic number, because the mean of its divisors is an integer number (5844150).

Almost surely, 2^87988871 is an apocalyptic number.

87988871 is a deficient number, since it is larger than the sum of its proper divisors (5517529).

87988871 is a wasteful number, since it uses less digits than its factorization.

87988871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658.

The product of its digits is 1806336, while the sum is 56.

The square root of 87988871 is about 9380.2383231984. The cubic root of 87988871 is about 444.7772668124. Note that the first 3 decimals are identical.

The spelling of 87988871 in words is "eighty-seven million, nine hundred eighty-eight thousand, eight hundred seventy-one".