13688566 has 8 divisors (see below), whose sum is σ = 20567880. Its totient is φ = 6832608.

The previous prime is 13688561. The next prime is 13688573. The reversal of 13688566 is 66588631.

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

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 4291 + ... + 6766.

It is an arithmetic number, because the mean of its divisors is an integer number (2570985).

Almost surely, 2^13688566 is an apocalyptic number.

13688566 is a deficient number, since it is larger than the sum of its proper divisors (6879314).

13688566 is a wasteful number, since it uses less digits than its factorization.

13688566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11678.

The product of its digits is 207360, while the sum is 43.

The square root of 13688566 is about 3699.8062111413. The cubic root of 13688566 is about 239.2136648942.

The spelling of 13688566 in words is "thirteen million, six hundred eighty-eight thousand, five hundred sixty-six".