12709643 has 2 divisors, whose sum is σ = 12709644. Its totient is φ = 12709642.

The previous prime is 12709633. The next prime is 12709661. The reversal of 12709643 is 34690721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12709643 - 2¹⁸ = 12447499 is a prime.

It is not a weakly prime, because it can be changed into another prime (12709633) 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, 6354821 + 6354822.

It is an arithmetic number, because the mean of its divisors is an integer number (6354822).

Almost surely, 2^12709643 is an apocalyptic number.

12709643 is a deficient number, since it is larger than the sum of its proper divisors (1).

12709643 is an equidigital number, since it uses as much as digits as its factorization.

12709643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 12709643 is about 3565.0586250439. The cubic root of 12709643 is about 233.3696907065.

The spelling of 12709643 in words is "twelve million, seven hundred nine thousand, six hundred forty-three".