108491688 has 96 divisors (see below), whose sum is σ = 313709760. Its totient is φ = 33753600.

The previous prime is 108491683. The next prime is 108491701. The reversal of 108491688 is 886194801.

It is not an unprimeable number, because it can be changed into a prime (108491683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184531 + ... + 185117.

It is an arithmetic number, because the mean of its divisors is an integer number (3267810).

Almost surely, 2^108491688 is an apocalyptic number.

108491688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 108491688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156854880).

108491688 is an abundant number, since it is smaller than the sum of its proper divisors (205218072).

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

108491688 is a wasteful number, since it uses less digits than its factorization.

108491688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767 (or 760 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 108491688 is about 10415.9343315902. The cubic root of 108491688 is about 476.9419124181.

The spelling of 108491688 in words is "one hundred eight million, four hundred ninety-one thousand, six hundred eighty-eight".