13857605 has 16 divisors (see below), whose sum is σ = 16988160. Its totient is φ = 10850112.

The previous prime is 13857581. The next prime is 13857607. The reversal of 13857605 is 50675831.

It is a cyclic number.

It is not a de Polignac number, because 13857605 - 2¹² = 13853509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13857607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88187 + ... + 88343.

It is an arithmetic number, because the mean of its divisors is an integer number (1061760).

Almost surely, 2^13857605 is an apocalyptic number.

It is an amenable number.

13857605 is a deficient number, since it is larger than the sum of its proper divisors (3130555).

13857605 is a wasteful number, since it uses less digits than its factorization.

13857605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 13857605 is about 3722.5804222340. The cubic root of 13857605 is about 240.1943160092.

The spelling of 13857605 in words is "thirteen million, eight hundred fifty-seven thousand, six hundred five".