108405688 has 16 divisors (see below), whose sum is σ = 207586080. Its totient is φ = 53049408.

The previous prime is 108405677. The next prime is 108405701. The reversal of 108405688 is 886504801.

It is a self number, because there is not a number n which added to its sum of digits gives 108405688.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143781 + ... + 144532.

It is an arithmetic number, because the mean of its divisors is an integer number (12974130).

Almost surely, 2^108405688 is an apocalyptic number.

It is an amenable number.

108405688 is a deficient number, since it is larger than the sum of its proper divisors (99180392).

108405688 is a wasteful number, since it uses less digits than its factorization.

108405688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288366 (or 288362 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 108405688 is about 10411.8052229188. The cubic root of 108405688 is about 476.8158571480.

The spelling of 108405688 in words is "one hundred eight million, four hundred five thousand, six hundred eighty-eight".