108691908 has 24 divisors (see below), whose sum is σ = 273123648. Its totient is φ = 33443616.

The previous prime is 108691901. The next prime is 108691969. The reversal of 108691908 is 809196801.

It is a self number, because there is not a number n which added to its sum of digits gives 108691908.

It is not an unprimeable number, because it can be changed into a prime (108691901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348216 + ... + 348527.

It is an arithmetic number, because the mean of its divisors is an integer number (11380152).

Almost surely, 2^108691908 is an apocalyptic number.

It is an amenable number.

108691908 is an abundant number, since it is smaller than the sum of its proper divisors (164431740).

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

108691908 is a wasteful number, since it uses less digits than its factorization.

108691908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696763 (or 696761 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 42.

The square root of 108691908 is about 10425.5411370346. The cubic root of 108691908 is about 477.2351288163.

The spelling of 108691908 in words is "one hundred eight million, six hundred ninety-one thousand, nine hundred eight".