108983691 has 8 divisors (see below), whose sum is σ = 161457360. Its totient is φ = 72655776.

The previous prime is 108983687. The next prime is 108983701. The reversal of 108983691 is 196389801.

It is not a de Polignac number, because 108983691 - 2² = 108983687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (108983491) 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, 2018190 + ... + 2018243.

It is an arithmetic number, because the mean of its divisors is an integer number (20182170).

Almost surely, 2^108983691 is an apocalyptic number.

108983691 is a deficient number, since it is larger than the sum of its proper divisors (52473669).

108983691 is an equidigital number, since it uses as much as digits as its factorization.

108983691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4036442 (or 4036436 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 108983691 is about 10439.5254202478. The cubic root of 108983691 is about 477.6617925276.

The spelling of 108983691 in words is "one hundred eight million, nine hundred eighty-three thousand, six hundred ninety-one".