87881610 has 32 divisors (see below), whose sum is σ = 211273920. Its totient is φ = 23395328.

The previous prime is 87881609. The next prime is 87881639. The reversal of 87881610 is 1618878.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18346 + ... + 22634.

It is an arithmetic number, because the mean of its divisors is an integer number (6602310).

Almost surely, 2^87881610 is an apocalyptic number.

87881610 is an abundant number, since it is smaller than the sum of its proper divisors (123392310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87881610 is a wasteful number, since it uses less digits than its factorization.

87881610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4982.

The product of its (nonzero) digits is 21504, while the sum is 39.

The square root of 87881610 is about 9374.5191876704. The cubic root of 87881610 is about 444.5964611699.

The spelling of 87881610 in words is "eighty-seven million, eight hundred eighty-one thousand, six hundred ten".