6730391 has 2 divisors, whose sum is σ = 6730392. Its totient is φ = 6730390.

The previous prime is 6730369. The next prime is 6730463. The reversal of 6730391 is 1930376.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6730391 - 2⁶ = 6730327 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6730331) 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, 3365195 + 3365196.

It is an arithmetic number, because the mean of its divisors is an integer number (3365196).

Almost surely, 2^6730391 is an apocalyptic number.

6730391 is a deficient number, since it is larger than the sum of its proper divisors (1).

6730391 is an equidigital number, since it uses as much as digits as its factorization.

6730391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 6730391 is about 2594.2997128320. The cubic root of 6730391 is about 188.8049741190.

The spelling of 6730391 in words is "six million, seven hundred thirty thousand, three hundred ninety-one".