13108865 has 32 divisors (see below), whose sum is σ = 19906560. Its totient is φ = 8049600.

The previous prime is 13108847. The next prime is 13108897. The reversal of 13108865 is 56880131.

It is not a de Polignac number, because 13108865 - 2²⁰ = 12060289 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30200 + ... + 30630.

It is an arithmetic number, because the mean of its divisors is an integer number (622080).

Almost surely, 2^13108865 is an apocalyptic number.

It is an amenable number.

13108865 is a deficient number, since it is larger than the sum of its proper divisors (6797695).

13108865 is a wasteful number, since it uses less digits than its factorization.

13108865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 13108865 is about 3620.6166601837. The cubic root of 13108865 is about 235.7879990717.

Adding to 13108865 its reverse (56880131), we get a palindrome (69988996).

The spelling of 13108865 in words is "thirteen million, one hundred eight thousand, eight hundred sixty-five".