13688543 has 8 divisors (see below), whose sum is σ = 15088080. Its totient is φ = 12314880.

The previous prime is 13688539. The next prime is 13688561. The reversal of 13688543 is 34588631.

13688543 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13688543 - 2² = 13688539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13688497 and 13688506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13688503) 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, 5348 + ... + 7481.

It is an arithmetic number, because the mean of its divisors is an integer number (1886010).

Almost surely, 2^13688543 is an apocalyptic number.

13688543 is a deficient number, since it is larger than the sum of its proper divisors (1399537).

13688543 is a wasteful number, since it uses less digits than its factorization.

13688543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12937.

The product of its digits is 69120, while the sum is 38.

The square root of 13688543 is about 3699.8031028691. The cubic root of 13688543 is about 239.2135309158.

The spelling of 13688543 in words is "thirteen million, six hundred eighty-eight thousand, five hundred forty-three".