12968861 has 2 divisors, whose sum is σ = 12968862. Its totient is φ = 12968860.

The previous prime is 12968821. The next prime is 12968873. The reversal of 12968861 is 16886921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9796900 + 3171961 = 3130^2 + 1781^2 .

It is a cyclic number.

It is not a de Polignac number, because 12968861 - 2⁶ = 12968797 is a prime.

It is a super-4 number, since 4×12968861⁴ (a number of 30 digits) contains 4444 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 (12968821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6484430 + 6484431.

It is an arithmetic number, because the mean of its divisors is an integer number (6484431).

Almost surely, 2^12968861 is an apocalyptic number.

It is an amenable number.

12968861 is a deficient number, since it is larger than the sum of its proper divisors (1).

12968861 is an equidigital number, since it uses as much as digits as its factorization.

12968861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 41.

The square root of 12968861 is about 3601.2304841540. The cubic root of 12968861 is about 234.9455796726.

The spelling of 12968861 in words is "twelve million, nine hundred sixty-eight thousand, eight hundred sixty-one".