13685806 has 8 divisors (see below), whose sum is σ = 20655144. Its totient is φ = 6800760.

The previous prime is 13685783. The next prime is 13685809. The reversal of 13685806 is 60858631.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13685809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20665 + ... + 21316.

It is an arithmetic number, because the mean of its divisors is an integer number (2581893).

Almost surely, 2^13685806 is an apocalyptic number.

13685806 is a deficient number, since it is larger than the sum of its proper divisors (6969338).

13685806 is a wasteful number, since it uses less digits than its factorization.

13685806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42146.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 13685806 is about 3699.4331998294. The cubic root of 13685806 is about 239.1975864120.

The spelling of 13685806 in words is "thirteen million, six hundred eighty-five thousand, eight hundred six".