6717791 has 2 divisors, whose sum is σ = 6717792. Its totient is φ = 6717790.

The previous prime is 6717787. The next prime is 6717797. The reversal of 6717791 is 1977176.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6717791 - 2² = 6717787 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6717797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3358895 + 3358896.

It is an arithmetic number, because the mean of its divisors is an integer number (3358896).

Almost surely, 2^6717791 is an apocalyptic number.

6717791 is a deficient number, since it is larger than the sum of its proper divisors (1).

6717791 is an equidigital number, since it uses as much as digits as its factorization.

6717791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18522, while the sum is 38.

The square root of 6717791 is about 2591.8701742178. The cubic root of 6717791 is about 188.6870795934.

It can be divided in two parts, 671 and 7791, that multiplied together give a triangular number (5227761 = T₃₂₃₃).

The spelling of 6717791 in words is "six million, seven hundred seventeen thousand, seven hundred ninety-one".