6740013391 has 2 divisors, whose sum is σ = 6740013392. Its totient is φ = 6740013390.

The previous prime is 6740013389. The next prime is 6740013407. The reversal of 6740013391 is 1933100476.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6740013391 - 2¹ = 6740013389 is a prime.

Together with 6740013389, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6740013331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3370006695 + 3370006696.

It is an arithmetic number, because the mean of its divisors is an integer number (3370006696).

Almost surely, 2^6740013391 is an apocalyptic number.

6740013391 is a deficient number, since it is larger than the sum of its proper divisors (1).

6740013391 is an equidigital number, since it uses as much as digits as its factorization.

6740013391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 6740013391 is about 82097.5845625193. The cubic root of 6740013391 is about 1888.9490897177.

The spelling of 6740013391 in words is "six billion, seven hundred forty million, thirteen thousand, three hundred ninety-one".