108685904 has 20 divisors (see below), whose sum is σ = 213465876. Its totient is φ = 53597952.

The previous prime is 108685903. The next prime is 108685931. The reversal of 108685904 is 409586801.

It can be written as a sum of positive squares in 2 ways, for example, as 83685904 + 25000000 = 9148^2 + 5000^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108685901) 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, 45359 + ... + 47694.

Almost surely, 2^108685904 is an apocalyptic number.

It is an amenable number.

108685904 is a deficient number, since it is larger than the sum of its proper divisors (104779972).

108685904 is an equidigital number, since it uses as much as digits as its factorization.

108685904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93134 (or 93128 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 108685904 is about 10425.2531863739. The cubic root of 108685904 is about 477.2263413714.

The spelling of 108685904 in words is "one hundred eight million, six hundred eighty-five thousand, nine hundred four".