12665743 has 2 divisors, whose sum is σ = 12665744. Its totient is φ = 12665742.

The previous prime is 12665713. The next prime is 12665771. The reversal of 12665743 is 34756621.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (34756621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12665743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12665699 and 12665708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12665713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6332871 + 6332872.

It is an arithmetic number, because the mean of its divisors is an integer number (6332872).

Almost surely, 2^12665743 is an apocalyptic number.

12665743 is a deficient number, since it is larger than the sum of its proper divisors (1).

12665743 is an equidigital number, since it uses as much as digits as its factorization.

12665743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 34.

The square root of 12665743 is about 3558.8963176805. The cubic root of 12665743 is about 233.1006889814.

The spelling of 12665743 in words is "twelve million, six hundred sixty-five thousand, seven hundred forty-three".