12668413 has 2 divisors, whose sum is σ = 12668414. Its totient is φ = 12668412.

The previous prime is 12668399. The next prime is 12668449. The reversal of 12668413 is 31486621.

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., 11957764 + 710649 = 3458^2 + 843^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12668413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12668483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6334206 + 6334207.

It is an arithmetic number, because the mean of its divisors is an integer number (6334207).

Almost surely, 2^12668413 is an apocalyptic number.

It is an amenable number.

12668413 is a deficient number, since it is larger than the sum of its proper divisors (1).

12668413 is an equidigital number, since it uses as much as digits as its factorization.

12668413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 12668413 is about 3559.2714142083. The cubic root of 12668413 is about 233.1170674155.

The spelling of 12668413 in words is "twelve million, six hundred sixty-eight thousand, four hundred thirteen".