13601865 has 16 divisors (see below), whose sum is σ = 21878208. Its totient is φ = 7215936.

The previous prime is 13601851. The next prime is 13601869. The reversal of 13601865 is 56810631.

13601865 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-13601865 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13601869) 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, 654 + ... + 5256.

It is an arithmetic number, because the mean of its divisors is an integer number (1367388).

Almost surely, 2^13601865 is an apocalyptic number.

13601865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13601865 is a deficient number, since it is larger than the sum of its proper divisors (8276343).

13601865 is a wasteful number, since it uses less digits than its factorization.

13601865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4808.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 13601865 is about 3688.0706338138. The cubic root of 13601865 is about 238.7075488973.

The spelling of 13601865 in words is "thirteen million, six hundred one thousand, eight hundred sixty-five".