87878568 has 32 divisors (see below), whose sum is σ = 222710400. Its totient is φ = 28891008.

The previous prime is 87878563. The next prime is 87878597. The reversal of 87878568 is 86587878.

It is not an unprimeable number, because it can be changed into a prime (87878563) 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, 23328 + ... + 26831.

It is an arithmetic number, because the mean of its divisors is an integer number (6959700).

Almost surely, 2^87878568 is an apocalyptic number.

It is an amenable number.

87878568 is an abundant number, since it is smaller than the sum of its proper divisors (134831832).

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

87878568 is a wasteful number, since it uses less digits than its factorization.

87878568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50241 (or 50237 counting only the distinct ones).

The product of its digits is 6021120, while the sum is 57.

The square root of 87878568 is about 9374.3569379451. The cubic root of 87878568 is about 444.5913312456.

The spelling of 87878568 in words is "eighty-seven million, eight hundred seventy-eight thousand, five hundred sixty-eight".