13568969 has 2 divisors, whose sum is σ = 13568970. Its totient is φ = 13568968.

The previous prime is 13568963. The next prime is 13568977. The reversal of 13568969 is 96986531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13542400 + 26569 = 3680^2 + 163^2 .

It is an emirp because it is prime and its reverse (96986531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13568969 - 2⁴ = 13568953 is a prime.

It is a super-2 number, since 2×13568969² = 368233839445922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13568963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6784484 + 6784485.

It is an arithmetic number, because the mean of its divisors is an integer number (6784485).

Almost surely, 2^13568969 is an apocalyptic number.

It is an amenable number.

13568969 is a deficient number, since it is larger than the sum of its proper divisors (1).

13568969 is an equidigital number, since it uses as much as digits as its factorization.

13568969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 47.

The square root of 13568969 is about 3683.6081496272. The cubic root of 13568969 is about 238.5149561298.

The spelling of 13568969 in words is "thirteen million, five hundred sixty-eight thousand, nine hundred sixty-nine".