87506504621 has 16 divisors (see below), whose sum is σ = 88845504000. Its totient is φ = 86178204288.

The previous prime is 87506504543. The next prime is 87506504627. The reversal of 87506504621 is 12640560578.

It is a cyclic number.

It is not a de Polignac number, because 87506504621 - 2³⁴ = 70326635437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87506504627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32253161 + ... + 32255873.

It is an arithmetic number, because the mean of its divisors is an integer number (5552844000).

Almost surely, 2^87506504621 is an apocalyptic number.

It is an amenable number.

87506504621 is a deficient number, since it is larger than the sum of its proper divisors (1338999379).

87506504621 is a wasteful number, since it uses less digits than its factorization.

87506504621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4508.

The product of its (nonzero) digits is 403200, while the sum is 44.

The spelling of 87506504621 in words is "eighty-seven billion, five hundred six million, five hundred four thousand, six hundred twenty-one".