6740443 has 2 divisors, whose sum is σ = 6740444. Its totient is φ = 6740442.

The previous prime is 6740429. The next prime is 6740471. The reversal of 6740443 is 3440476.

It is an a-pointer prime, because the next prime (6740471) can be obtained adding 6740443 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6740443 is a prime.

6740443 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6740473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3370221 + 3370222.

It is an arithmetic number, because the mean of its divisors is an integer number (3370222).

Almost surely, 2^6740443 is an apocalyptic number.

6740443 is a deficient number, since it is larger than the sum of its proper divisors (1).

6740443 is an equidigital number, since it uses as much as digits as its factorization.

6740443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 6740443 is about 2596.2363143597. The cubic root of 6740443 is about 188.8989222788.

The spelling of 6740443 in words is "six million, seven hundred forty thousand, four hundred forty-three".