12757643 has 2 divisors, whose sum is σ = 12757644. Its totient is φ = 12757642.

The previous prime is 12757639. The next prime is 12757649. The reversal of 12757643 is 34675721.

It is a weak prime.

It is an emirp because it is prime and its reverse (34675721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12757643 - 2² = 12757639 is a prime.

It is not a weakly prime, because it can be changed into another prime (12757649) 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, 6378821 + 6378822.

It is an arithmetic number, because the mean of its divisors is an integer number (6378822).

Almost surely, 2^12757643 is an apocalyptic number.

12757643 is a deficient number, since it is larger than the sum of its proper divisors (1).

12757643 is an equidigital number, since it uses as much as digits as its factorization.

12757643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 35.

The square root of 12757643 is about 3571.7842879995. The cubic root of 12757643 is about 233.6631076273.

The spelling of 12757643 in words is "twelve million, seven hundred fifty-seven thousand, six hundred forty-three".