87557916 has 12 divisors (see below), whose sum is σ = 204301832. Its totient is φ = 29185968.

The previous prime is 87557881. The next prime is 87557927. The reversal of 87557916 is 61975578.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 3648235 + ... + 3648258.

Almost surely, 2^87557916 is an apocalyptic number.

It is an amenable number.

87557916 is an abundant number, since it is smaller than the sum of its proper divisors (116743916).

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

87557916 is a wasteful number, since it uses less digits than its factorization.

87557916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7296500 (or 7296498 counting only the distinct ones).

The product of its digits is 529200, while the sum is 48.

The square root of 87557916 is about 9357.2386952562. The cubic root of 87557916 is about 444.0499294552.

The spelling of 87557916 in words is "eighty-seven million, five hundred fifty-seven thousand, nine hundred sixteen".