13851685 has 16 divisors (see below), whose sum is σ = 17775936. Its totient is φ = 10325248.

The previous prime is 13851679. The next prime is 13851689. The reversal of 13851685 is 58615831.

13851685 is digitally balanced in base 2, 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 13851685 - 2¹⁷ = 13720613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13851689) 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, 8334 + ... + 9856.

It is an arithmetic number, because the mean of its divisors is an integer number (1110996).

Almost surely, 2^13851685 is an apocalyptic number.

It is an amenable number.

13851685 is a deficient number, since it is larger than the sum of its proper divisors (3924251).

13851685 is a wasteful number, since it uses less digits than its factorization.

13851685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652.

The product of its digits is 28800, while the sum is 37.

The square root of 13851685 is about 3721.7851899324. The cubic root of 13851685 is about 240.1601072869.

It can be divided in two parts, 138516 and 85, that added together give a triangular number (138601 = T₅₂₆).

The spelling of 13851685 in words is "thirteen million, eight hundred fifty-one thousand, six hundred eighty-five".