13881685 has 16 divisors (see below), whose sum is σ = 17913600. Its totient is φ = 10293696.

The previous prime is 13881683. The next prime is 13881701. The reversal of 13881685 is 58618831.

13881685 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13881685 - 2¹ = 13881683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13881683) 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, 2911 + ... + 6019.

It is an arithmetic number, because the mean of its divisors is an integer number (1119600).

Almost surely, 2^13881685 is an apocalyptic number.

It is an amenable number.

13881685 is a deficient number, since it is larger than the sum of its proper divisors (4031915).

13881685 is a wasteful number, since it uses less digits than its factorization.

13881685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3180.

The product of its digits is 46080, while the sum is 40.

The square root of 13881685 is about 3725.8133340252. The cubic root of 13881685 is about 240.3333619746. Note that the first 4 decimals are identical.

The spelling of 13881685 in words is "thirteen million, eight hundred eighty-one thousand, six hundred eighty-five".