12664829 has 2 divisors, whose sum is σ = 12664830. Its totient is φ = 12664828.

The previous prime is 12664807. The next prime is 12664871. The reversal of 12664829 is 92846621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8543929 + 4120900 = 2923^2 + 2030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12664829 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12664792 and 12664801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12664889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6332414 + 6332415.

It is an arithmetic number, because the mean of its divisors is an integer number (6332415).

Almost surely, 2^12664829 is an apocalyptic number.

It is an amenable number.

12664829 is a deficient number, since it is larger than the sum of its proper divisors (1).

12664829 is an equidigital number, since it uses as much as digits as its factorization.

12664829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 12664829 is about 3558.7679047670. The cubic root of 12664829 is about 233.0950817526.

The spelling of 12664829 in words is "twelve million, six hundred sixty-four thousand, eight hundred twenty-nine".