6722791 has 2 divisors, whose sum is σ = 6722792. Its totient is φ = 6722790.

The previous prime is 6722767. The next prime is 6722797. The reversal of 6722791 is 1972276.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6722791 - 2⁵ = 6722759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6722797) 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, 3361395 + 3361396.

It is an arithmetic number, because the mean of its divisors is an integer number (3361396).

Almost surely, 2^6722791 is an apocalyptic number.

6722791 is a deficient number, since it is larger than the sum of its proper divisors (1).

6722791 is an equidigital number, since it uses as much as digits as its factorization.

6722791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 34.

The square root of 6722791 is about 2592.8345492916. The cubic root of 6722791 is about 188.7338807631.

The spelling of 6722791 in words is "six million, seven hundred twenty-two thousand, seven hundred ninety-one".