13907685 has 32 divisors (see below), whose sum is σ = 25067520. Its totient is φ = 6523200.

The previous prime is 13907681. The next prime is 13907687. The reversal of 13907685 is 58670931.

It is not a de Polignac number, because 13907685 - 2² = 13907681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13907681) 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 31 ways as a sum of consecutive naturals, for example, 3756 + ... + 6474.

It is an arithmetic number, because the mean of its divisors is an integer number (783360).

Almost surely, 2^13907685 is an apocalyptic number.

13907685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13907685 is a deficient number, since it is larger than the sum of its proper divisors (11159835).

13907685 is a wasteful number, since it uses less digits than its factorization.

13907685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2769.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 13907685 is about 3729.3008728179. The cubic root of 13907685 is about 240.4833142384.

The spelling of 13907685 in words is "thirteen million, nine hundred seven thousand, six hundred eighty-five".