87775968 has 48 divisors (see below), whose sum is σ = 263329920. Its totient is φ = 25078656.

The previous prime is 87775939. The next prime is 87775999. The reversal of 87775968 is 86957778.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64638 + ... + 65981.

It is an arithmetic number, because the mean of its divisors is an integer number (5486040).

Almost surely, 2^87775968 is an apocalyptic number.

It is an amenable number.

87775968 is an abundant number, since it is smaller than the sum of its proper divisors (175553952).

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

87775968 is a wasteful number, since it uses less digits than its factorization.

87775968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130639 (or 130631 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 57.

The square root of 87775968 is about 9368.8829643667. The cubic root of 87775968 is about 444.4182407514.

The spelling of 87775968 in words is "eighty-seven million, seven hundred seventy-five thousand, nine hundred sixty-eight".