6729791 has 2 divisors, whose sum is σ = 6729792. Its totient is φ = 6729790.

The previous prime is 6729787. The next prime is 6729799. The reversal of 6729791 is 1979276.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6729791 - 2² = 6729787 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 (6729799) 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, 3364895 + 3364896.

It is an arithmetic number, because the mean of its divisors is an integer number (3364896).

Almost surely, 2^6729791 is an apocalyptic number.

6729791 is a deficient number, since it is larger than the sum of its proper divisors (1).

6729791 is an equidigital number, since it uses as much as digits as its factorization.

6729791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47628, while the sum is 41.

The square root of 6729791 is about 2594.1840721121. The cubic root of 6729791 is about 188.7993634321.

The spelling of 6729791 in words is "six million, seven hundred twenty-nine thousand, seven hundred ninety-one".