87085668 has 12 divisors (see below), whose sum is σ = 203199920. Its totient is φ = 29028552.

The previous prime is 87085667. The next prime is 87085697. The reversal of 87085668 is 86658078.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (87085667) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3628558 + ... + 3628581.

Almost surely, 2^87085668 is an apocalyptic number.

It is an amenable number.

87085668 is an abundant number, since it is smaller than the sum of its proper divisors (116114252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87085668 is a wasteful number, since it uses less digits than its factorization.

87085668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7257146 (or 7257144 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The square root of 87085668 is about 9331.9702099825. The cubic root of 87085668 is about 443.2501546828.

The spelling of 87085668 in words is "eighty-seven million, eighty-five thousand, six hundred sixty-eight".