87881604 has 24 divisors (see below), whose sum is σ = 205386720. Its totient is φ = 29246784.

The previous prime is 87881603. The next prime is 87881609. The reversal of 87881604 is 40618878.

It is a super-2 number, since 2×87881604² = 15446352643225632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87881603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2352 + ... + 13464.

It is an arithmetic number, because the mean of its divisors is an integer number (8557780).

Almost surely, 2^87881604 is an apocalyptic number.

It is an amenable number.

87881604 is an abundant number, since it is smaller than the sum of its proper divisors (117505116).

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

87881604 is a wasteful number, since it uses less digits than its factorization.

87881604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11779 (or 11777 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 87881604 is about 9374.5188676540. The cubic root of 87881604 is about 444.5964510518.

The spelling of 87881604 in words is "eighty-seven million, eight hundred eighty-one thousand, six hundred four".