6740340091 has 2 divisors, whose sum is σ = 6740340092. Its totient is φ = 6740340090.

The previous prime is 6740340053. The next prime is 6740340143. The reversal of 6740340091 is 1900430476.

It is a happy number.

6740340091 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6740340091 is a prime.

It is not a weakly prime, because it can be changed into another prime (6740340011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3370170045 + 3370170046.

It is an arithmetic number, because the mean of its divisors is an integer number (3370170046).

Almost surely, 2^6740340091 is an apocalyptic number.

6740340091 is a deficient number, since it is larger than the sum of its proper divisors (1).

6740340091 is an equidigital number, since it uses as much as digits as its factorization.

6740340091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 6740340091 is about 82099.5742437194. The cubic root of 6740340091 is about 1888.9796094245.

The spelling of 6740340091 in words is "six billion, seven hundred forty million, three hundred forty thousand, ninety-one".