87974656 has 72 divisors (see below), whose sum is σ = 218985984. Its totient is φ = 34268160.

The previous prime is 87974639. The next prime is 87974699. The reversal of 87974656 is 65647978.

It is a happy number.

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, 17481 + ... + 21943.

It is an arithmetic number, because the mean of its divisors is an integer number (3041472).

Almost surely, 2^87974656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87974656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109492992).

87974656 is an abundant number, since it is smaller than the sum of its proper divisors (131011328).

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

87974656 is a wasteful number, since it uses less digits than its factorization.

87974656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4497 (or 4483 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 52.

The square root of 87974656 is about 9379.4805826336. The cubic root of 87974656 is about 444.7533135962.

The spelling of 87974656 in words is "eighty-seven million, nine hundred seventy-four thousand, six hundred fifty-six".