6742643 has 2 divisors, whose sum is σ = 6742644. Its totient is φ = 6742642.

The previous prime is 6742577. The next prime is 6742649. The reversal of 6742643 is 3462476.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6742643 - 2¹⁰ = 6741619 is a prime.

It is not a weakly prime, because it can be changed into another prime (6742649) 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, 3371321 + 3371322.

It is an arithmetic number, because the mean of its divisors is an integer number (3371322).

Almost surely, 2^6742643 is an apocalyptic number.

6742643 is a deficient number, since it is larger than the sum of its proper divisors (1).

6742643 is an equidigital number, since it uses as much as digits as its factorization.

6742643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 32.

The square root of 6742643 is about 2596.6599700384. The cubic root of 6742643 is about 188.9194714931.

The spelling of 6742643 in words is "six million, seven hundred forty-two thousand, six hundred forty-three".