13645885 has 16 divisors (see below), whose sum is σ = 18004032. Its totient is φ = 9846400.

The previous prime is 13645847. The next prime is 13645897. The reversal of 13645885 is 58854631.

It is not a de Polignac number, because 13645885 - 2⁷ = 13645757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6630 + ... + 8440.

It is an arithmetic number, because the mean of its divisors is an integer number (1125252).

Almost surely, 2^13645885 is an apocalyptic number.

It is an amenable number.

13645885 is a deficient number, since it is larger than the sum of its proper divisors (4358147).

13645885 is a wasteful number, since it uses less digits than its factorization.

13645885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964.

The product of its digits is 115200, while the sum is 40.

The square root of 13645885 is about 3694.0337031489. The cubic root of 13645885 is about 238.9647830091.

The spelling of 13645885 in words is "thirteen million, six hundred forty-five thousand, eight hundred eighty-five".