108689690 has 16 divisors (see below), whose sum is σ = 205938720. Its totient is φ = 41187600.

The previous prime is 108689657. The next prime is 108689771. The reversal of 108689690 is 96986801.

It is a super-2 number, since 2×108689690² = 23626897424592200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285836 + ... + 286215.

It is an arithmetic number, because the mean of its divisors is an integer number (12871170).

Almost surely, 2^108689690 is an apocalyptic number.

108689690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

108689690 is a deficient number, since it is larger than the sum of its proper divisors (97249030).

108689690 is a wasteful number, since it uses less digits than its factorization.

108689690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572077.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 108689690 is about 10425.4347631166. The cubic root of 108689690 is about 477.2318825927.

The spelling of 108689690 in words is "one hundred eight million, six hundred eighty-nine thousand, six hundred ninety".