13668911 has 2 divisors, whose sum is σ = 13668912. Its totient is φ = 13668910.

The previous prime is 13668881. The next prime is 13668913. The reversal of 13668911 is 11986631.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13668911 is a prime.

Together with 13668913, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13668913) 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 as a sum of consecutive naturals, namely, 6834455 + 6834456.

It is an arithmetic number, because the mean of its divisors is an integer number (6834456).

Almost surely, 2^13668911 is an apocalyptic number.

13668911 is a deficient number, since it is larger than the sum of its proper divisors (1).

13668911 is an equidigital number, since it uses as much as digits as its factorization.

13668911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 35.

The square root of 13668911 is about 3697.1490367579. The cubic root of 13668911 is about 239.0991168170.

The spelling of 13668911 in words is "thirteen million, six hundred sixty-eight thousand, nine hundred eleven".