13656911 has 2 divisors, whose sum is σ = 13656912. Its totient is φ = 13656910.

The previous prime is 13656901. The next prime is 13656989. The reversal of 13656911 is 11965631.

It is a happy number.

13656911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13656911 - 2⁶ = 13656847 is a prime.

It is a super-2 number, since 2×13656911² = 373022436123842, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13656901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6828455 + 6828456.

It is an arithmetic number, because the mean of its divisors is an integer number (6828456).

Almost surely, 2^13656911 is an apocalyptic number.

13656911 is a deficient number, since it is larger than the sum of its proper divisors (1).

13656911 is an equidigital number, since it uses as much as digits as its factorization.

13656911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 32.

The square root of 13656911 is about 3695.5258083255. The cubic root of 13656911 is about 239.0291275927.

The spelling of 13656911 in words is "thirteen million, six hundred fifty-six thousand, nine hundred eleven".