12968689 has 2 divisors, whose sum is σ = 12968690. Its totient is φ = 12968688.

The previous prime is 12968687. The next prime is 12968699. The reversal of 12968689 is 98686921.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7290000 + 5678689 = 2700^2 + 2383^2 .

It is a cyclic number.

It is not a de Polignac number, because 12968689 - 2¹ = 12968687 is a prime.

Together with 12968687, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12968687) 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, 6484344 + 6484345.

It is an arithmetic number, because the mean of its divisors is an integer number (6484345).

Almost surely, 2^12968689 is an apocalyptic number.

It is an amenable number.

12968689 is a deficient number, since it is larger than the sum of its proper divisors (1).

12968689 is an equidigital number, since it uses as much as digits as its factorization.

12968689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 49.

The square root of 12968689 is about 3601.2066033484. The cubic root of 12968689 is about 234.9445410098.

The spelling of 12968689 in words is "twelve million, nine hundred sixty-eight thousand, six hundred eighty-nine".