13729685 has 16 divisors (see below), whose sum is σ = 17751360. Its totient is φ = 10160640.

The previous prime is 13729663. The next prime is 13729699. The reversal of 13729685 is 58692731.

It is not a de Polignac number, because 13729685 - 2¹⁰ = 13728661 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2405 + ... + 5765.

It is an arithmetic number, because the mean of its divisors is an integer number (1109460).

Almost surely, 2^13729685 is an apocalyptic number.

It is an amenable number.

13729685 is a deficient number, since it is larger than the sum of its proper divisors (4021675).

13729685 is a wasteful number, since it uses less digits than its factorization.

13729685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3428.

The product of its digits is 90720, while the sum is 41.

The square root of 13729685 is about 3705.3589569703. The cubic root of 13729685 is about 239.4529496154.

The spelling of 13729685 in words is "thirteen million, seven hundred twenty-nine thousand, six hundred eighty-five".