108905 has 8 divisors (see below), whose sum is σ = 136512. Its totient is φ = 83248.

The previous prime is 108893. The next prime is 108907. The reversal of 108905 is 509801.

108905 is nontrivially palindromic in base 12.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 108905 - 2⁸ = 108649 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108907) 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, 359 + ... + 588.

It is an arithmetic number, because the mean of its divisors is an integer number (17064).

2¹⁰⁸⁹⁰⁵ is an apocalyptic number.

It is an amenable number.

108905 is a deficient number, since it is larger than the sum of its proper divisors (27607).

108905 is an equidigital number, since it uses as much as digits as its factorization.

108905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 108905 is about 330.0075756706. The cubic root of 108905 is about 47.7546800599.

The spelling of 108905 in words is "one hundred eight thousand, nine hundred five".