12664723 has 2 divisors, whose sum is σ = 12664724. Its totient is φ = 12664722.

The previous prime is 12664699. The next prime is 12664733. The reversal of 12664723 is 32746621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12664723 is a prime.

It is not a weakly prime, because it can be changed into another prime (12664733) 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, 6332361 + 6332362.

It is an arithmetic number, because the mean of its divisors is an integer number (6332362).

Almost surely, 2^12664723 is an apocalyptic number.

12664723 is a deficient number, since it is larger than the sum of its proper divisors (1).

12664723 is an equidigital number, since it uses as much as digits as its factorization.

12664723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 31.

The square root of 12664723 is about 3558.7530119411. The cubic root of 12664723 is about 233.0944314439.

The spelling of 12664723 in words is "twelve million, six hundred sixty-four thousand, seven hundred twenty-three".