13656697 has 2 divisors, whose sum is σ = 13656698. Its totient is φ = 13656696.

The previous prime is 13656689. The next prime is 13656739. The reversal of 13656697 is 79665631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7123561 + 6533136 = 2669^2 + 2556^2 .

It is a cyclic number.

It is not a de Polignac number, because 13656697 - 2³ = 13656689 is a prime.

It is not a weakly prime, because it can be changed into another prime (13636697) 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, 6828348 + 6828349.

It is an arithmetic number, because the mean of its divisors is an integer number (6828349).

Almost surely, 2^13656697 is an apocalyptic number.

It is an amenable number.

13656697 is a deficient number, since it is larger than the sum of its proper divisors (1).

13656697 is an equidigital number, since it uses as much as digits as its factorization.

13656697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 43.

The square root of 13656697 is about 3695.4968542809. The cubic root of 13656697 is about 239.0278790795.

The spelling of 13656697 in words is "thirteen million, six hundred fifty-six thousand, six hundred ninety-seven".