87590881 has 15 divisors (see below), whose sum is σ = 102721073. Its totient is φ = 74684820.

The previous prime is 87590873. The next prime is 87590917. The reversal of 87590881 is 18809578.

The square root of 87590881 is 9359.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 87590881 - 2³ = 87590873 is a prime.

It is a super-2 number, since 2×87590881² = 15344324868712322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87590081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 458496 + ... + 458686.

Almost surely, 2^87590881 is an apocalyptic number.

87590881 is the 9359-th square number.

87590881 is the 4680-th centered octagonal number.

It is an amenable number.

87590881 is a deficient number, since it is larger than the sum of its proper divisors (15130192).

87590881 is an frugal number, since it uses more digits than its factorization.

87590881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 46.

The cubic root of 87590881 is about 444.1056497903.

The spelling of 87590881 in words is "eighty-seven million, five hundred ninety thousand, eight hundred eighty-one".