6723709 has 2 divisors, whose sum is σ = 6723710. Its totient is φ = 6723708.

The previous prime is 6723697. The next prime is 6723719. The reversal of 6723709 is 9073276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3404025 + 3319684 = 1845^2 + 1822^2 .

It is a cyclic number.

It is not a de Polignac number, because 6723709 - 2¹¹ = 6721661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6723719) 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, 3361854 + 3361855.

It is an arithmetic number, because the mean of its divisors is an integer number (3361855).

Almost surely, 2^6723709 is an apocalyptic number.

It is an amenable number.

6723709 is a deficient number, since it is larger than the sum of its proper divisors (1).

6723709 is an equidigital number, since it uses as much as digits as its factorization.

6723709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 6723709 is about 2593.0115695847. The cubic root of 6723709 is about 188.7424709363.

The spelling of 6723709 in words is "six million, seven hundred twenty-three thousand, seven hundred nine".