87690625 has 24 divisors (see below), whose sum is σ = 119617344. Its totient is φ = 63750000.

The previous prime is 87690587. The next prime is 87690637. The reversal of 87690625 is 52609678.

It is not a de Polignac number, because 87690625 - 2⁷ = 87690497 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 33100 + ... + 35650.

It is an arithmetic number, because the mean of its divisors is an integer number (4984056).

Almost surely, 2^87690625 is an apocalyptic number.

It is an amenable number.

87690625 is a deficient number, since it is larger than the sum of its proper divisors (31926719).

87690625 is an equidigital number, since it uses as much as digits as its factorization.

87690625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2587 (or 2567 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 87690625 is about 9364.3272582711. The cubic root of 87690625 is about 444.2741607499.

The spelling of 87690625 in words is "eighty-seven million, six hundred ninety thousand, six hundred twenty-five".