13905685 has 8 divisors (see below), whose sum is σ = 17412480. Its totient is φ = 10640784.

The previous prime is 13905607. The next prime is 13905707. The reversal of 13905685 is 58650931.

13905685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13905685 - 2¹⁵ = 13872917 is a prime.

It is a super-3 number, since 3×13905685³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60345 + ... + 60574.

It is an arithmetic number, because the mean of its divisors is an integer number (2176560).

Almost surely, 2^13905685 is an apocalyptic number.

It is an amenable number.

13905685 is a deficient number, since it is larger than the sum of its proper divisors (3506795).

13905685 is a wasteful number, since it uses less digits than its factorization.

13905685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120947.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 13905685 is about 3729.0327164025. The cubic root of 13905685 is about 240.4717860872.

The spelling of 13905685 in words is "thirteen million, nine hundred five thousand, six hundred eighty-five".