87055764 has 24 divisors (see below), whose sum is σ = 204351168. Its totient is φ = 28844160.

The previous prime is 87055763. The next prime is 87055799. The reversal of 87055764 is 46755078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87055763) 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, 19717 + ... + 23724.

It is an arithmetic number, because the mean of its divisors is an integer number (8514632).

Almost surely, 2^87055764 is an apocalyptic number.

It is an amenable number.

87055764 is an abundant number, since it is smaller than the sum of its proper divisors (117295404).

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

87055764 is a wasteful number, since it uses less digits than its factorization.

87055764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43615 (or 43613 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 42.

The square root of 87055764 is about 9330.3678384081. The cubic root of 87055764 is about 443.1994135738.

The spelling of 87055764 in words is "eighty-seven million, fifty-five thousand, seven hundred sixty-four".