87681584 has 20 divisors (see below), whose sum is σ = 170595480. Its totient is φ = 43656960.

The previous prime is 87681571. The next prime is 87681613. The reversal of 87681584 is 48518678.

It is a happy number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7514 + ... + 15225.

It is an arithmetic number, because the mean of its divisors is an integer number (8529774).

Almost surely, 2^87681584 is an apocalyptic number.

It is an amenable number.

87681584 is a deficient number, since it is larger than the sum of its proper divisors (82913896).

87681584 is a wasteful number, since it uses less digits than its factorization.

87681584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22988 (or 22982 counting only the distinct ones).

The product of its digits is 430080, while the sum is 47.

The square root of 87681584 is about 9363.8445096018. The cubic root of 87681584 is about 444.2588918401.

The spelling of 87681584 in words is "eighty-seven million, six hundred eighty-one thousand, five hundred eighty-four".