87180507 has 12 divisors (see below), whose sum is σ = 126562800. Its totient is φ = 57827088.

The previous prime is 87180503. The next prime is 87180521. The reversal of 87180507 is 70508178.

87180507 is a `hidden beast` number, since 8 + 71 + 80 + 507 = 666.

It is not a de Polignac number, because 87180507 - 2² = 87180503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87180503) 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 11 ways as a sum of consecutive naturals, for example, 22548 + ... + 26129.

It is an arithmetic number, because the mean of its divisors is an integer number (10546900).

Almost surely, 2^87180507 is an apocalyptic number.

87180507 is a deficient number, since it is larger than the sum of its proper divisors (39382293).

87180507 is a wasteful number, since it uses less digits than its factorization.

87180507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48882 (or 48879 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 36.

The square root of 87180507 is about 9337.0502301316. The cubic root of 87180507 is about 443.4110007079.

The spelling of 87180507 in words is "eighty-seven million, one hundred eighty thousand, five hundred seven".