13687814 has 16 divisors (see below), whose sum is σ = 23528448. Its totient is φ = 5850312.

The previous prime is 13687811. The next prime is 13687831. The reversal of 13687814 is 41878631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13687811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5099 + ... + 7305.

It is an arithmetic number, because the mean of its divisors is an integer number (1470528).

Almost surely, 2^13687814 is an apocalyptic number.

13687814 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13687814 is a deficient number, since it is larger than the sum of its proper divisors (9840634).

13687814 is a wasteful number, since it uses less digits than its factorization.

13687814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659.

The product of its digits is 32256, while the sum is 38.

The square root of 13687814 is about 3699.7045828012. The cubic root of 13687814 is about 239.2092843046.

The spelling of 13687814 in words is "thirteen million, six hundred eighty-seven thousand, eight hundred fourteen".