108991602 has 32 divisors (see below), whose sum is σ = 242544960. Its totient is φ = 36279360.

The previous prime is 108991601. The next prime is 108991609. The reversal of 108991602 is 206199801.

It is not an unprimeable number, because it can be changed into a prime (108991601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72753 + ... + 74235.

It is an arithmetic number, because the mean of its divisors is an integer number (7579530).

Almost surely, 2^108991602 is an apocalyptic number.

108991602 is an abundant number, since it is smaller than the sum of its proper divisors (133553358).

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

108991602 is a wasteful number, since it uses less digits than its factorization.

108991602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855 (or 2849 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 108991602 is about 10439.9043099063. The cubic root of 108991602 is about 477.6733498868.

The spelling of 108991602 in words is "one hundred eight million, nine hundred ninety-one thousand, six hundred two".