87897056 has 24 divisors (see below), whose sum is σ = 186359544. Its totient is φ = 40567680.

The previous prime is 87897049. The next prime is 87897091. The reversal of 87897056 is 65079878.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 87896995 and 87897013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105230 + ... + 106061.

It is an arithmetic number, because the mean of its divisors is an integer number (7764981).

Almost surely, 2^87897056 is an apocalyptic number.

It is an amenable number.

87897056 is an abundant number, since it is smaller than the sum of its proper divisors (98462488).

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

87897056 is a wasteful number, since it uses less digits than its factorization.

87897056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211314 (or 211306 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 50.

The square root of 87897056 is about 9375.3429803928. The cubic root of 87897056 is about 444.6225069477.

The spelling of 87897056 in words is "eighty-seven million, eight hundred ninety-seven thousand, fifty-six".