108136905 has 16 divisors (see below), whose sum is σ = 175457664. Its totient is φ = 56860160.

The previous prime is 108136901. The next prime is 108136913. The reversal of 108136905 is 509631801.

It is not a de Polignac number, because 108136905 - 2² = 108136901 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (108136901) 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, 49704 + ... + 51833.

It is an arithmetic number, because the mean of its divisors is an integer number (10966104).

Almost surely, 2^108136905 is an apocalyptic number.

108136905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

108136905 is a deficient number, since it is larger than the sum of its proper divisors (67320759).

108136905 is a wasteful number, since it uses less digits than its factorization.

108136905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101616.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 108136905 is about 10398.8896041837. The cubic root of 108136905 is about 476.4214557539.

The spelling of 108136905 in words is "one hundred eight million, one hundred thirty-six thousand, nine hundred five".