13688569 has 8 divisors (see below), whose sum is σ = 14625440. Its totient is φ = 12773376.

The previous prime is 13688561. The next prime is 13688573. The reversal of 13688569 is 96588631.

13688569 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 13688569 - 2³ = 13688561 is a prime.

It is a super-2 number, since 2×13688569² = 374753842535522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13688561) 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, 4104 + ... + 6649.

It is an arithmetic number, because the mean of its divisors is an integer number (1828180).

Almost surely, 2^13688569 is an apocalyptic number.

13688569 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

13688569 is a deficient number, since it is larger than the sum of its proper divisors (936871).

13688569 is a wasteful number, since it uses less digits than its factorization.

13688569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10839.

The product of its digits is 311040, while the sum is 46.

The square root of 13688569 is about 3699.8066165680. The cubic root of 13688569 is about 239.2136823697.

The spelling of 13688569 in words is "thirteen million, six hundred eighty-eight thousand, five hundred sixty-nine".