13688043 has 16 divisors (see below), whose sum is σ = 19408896. Its totient is φ = 8551040.

The previous prime is 13688041. The next prime is 13688047. The reversal of 13688043 is 34088631.

It is a cyclic number.

It is not a de Polignac number, because 13688043 - 2¹ = 13688041 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 13687995 and 13688013.

It is not an unprimeable number, because it can be changed into a prime (13688041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15430 + ... + 16292.

It is an arithmetic number, because the mean of its divisors is an integer number (1213056).

Almost surely, 2^13688043 is an apocalyptic number.

13688043 is a deficient number, since it is larger than the sum of its proper divisors (5720853).

13688043 is a wasteful number, since it uses less digits than its factorization.

13688043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 13688043 is about 3699.7355310887. The cubic root of 13688043 is about 239.2106183043.

The spelling of 13688043 in words is "thirteen million, six hundred eighty-eight thousand, forty-three".