13688911 has 8 divisors (see below), whose sum is σ = 14487920. Its totient is φ = 12897792.

The previous prime is 13688897. The next prime is 13688929. The reversal of 13688911 is 11988631.

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 13688911 - 2⁵ = 13688879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13688951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1801 + ... + 5533.

It is an arithmetic number, because the mean of its divisors is an integer number (1810990).

Almost surely, 2^13688911 is an apocalyptic number.

13688911 is a deficient number, since it is larger than the sum of its proper divisors (799009).

13688911 is a wasteful number, since it uses less digits than its factorization.

13688911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3945.

The product of its digits is 10368, while the sum is 37.

The square root of 13688911 is about 3699.8528349111. The cubic root of 13688911 is about 239.2156745525.

It can be divided in two parts, 136889 and 11, that added together give a square (136900 = 370²).

The spelling of 13688911 in words is "thirteen million, six hundred eighty-eight thousand, nine hundred eleven".