13685223 has 8 divisors (see below), whose sum is σ = 18671488. Its totient is φ = 8911224.

The previous prime is 13685213. The next prime is 13685251. The reversal of 13685223 is 32258631.

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

It is not a de Polignac number, because 13685223 - 2⁶ = 13685159 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 (13685213) 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 7 ways as a sum of consecutive naturals, for example, 52915 + ... + 53172.

It is an arithmetic number, because the mean of its divisors is an integer number (2333936).

Almost surely, 2^13685223 is an apocalyptic number.

13685223 is a deficient number, since it is larger than the sum of its proper divisors (4986265).

13685223 is a wasteful number, since it uses less digits than its factorization.

13685223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106133.

The product of its digits is 8640, while the sum is 30.

The square root of 13685223 is about 3699.3544031358. The cubic root of 13685223 is about 239.1941898474.

The spelling of 13685223 in words is "thirteen million, six hundred eighty-five thousand, two hundred twenty-three".