86691604 has 12 divisors (see below), whose sum is σ = 159695200. Its totient is φ = 41064408.

The previous prime is 86691601. The next prime is 86691637. The reversal of 86691604 is 40619668.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86691601) 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 3 ways as a sum of consecutive naturals, for example, 570264 + ... + 570415.

Almost surely, 2^86691604 is an apocalyptic number.

It is an amenable number.

86691604 is a deficient number, since it is larger than the sum of its proper divisors (73003596).

86691604 is a wasteful number, since it uses less digits than its factorization.

86691604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140702 (or 1140700 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 86691604 is about 9310.8326158298. The cubic root of 86691604 is about 442.5805724306.

The spelling of 86691604 in words is "eighty-six million, six hundred ninety-one thousand, six hundred four".