87705768 has 32 divisors (see below), whose sum is σ = 221911200. Its totient is φ = 28882368.

The previous prime is 87705757. The next prime is 87705791. The reversal of 87705768 is 86750778.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20023 + ... + 24006.

It is an arithmetic number, because the mean of its divisors is an integer number (6934725).

Almost surely, 2^87705768 is an apocalyptic number.

It is an amenable number.

87705768 is an abundant number, since it is smaller than the sum of its proper divisors (134205432).

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

87705768 is a wasteful number, since it uses less digits than its factorization.

87705768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44121 (or 44117 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 48.

The square root of 87705768 is about 9365.1357705054. The cubic root of 87705768 is about 444.2997326830.

The spelling of 87705768 in words is "eighty-seven million, seven hundred five thousand, seven hundred sixty-eight".