6724709 has 2 divisors, whose sum is σ = 6724710. Its totient is φ = 6724708.

The previous prime is 6724649. The next prime is 6724721. The reversal of 6724709 is 9074276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5536609 + 1188100 = 2353^2 + 1090^2 .

It is a cyclic number.

It is not a de Polignac number, because 6724709 - 2⁸ = 6724453 is a prime.

It is a super-2 number, since 2×6724709² = 90443422269362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6724759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3362354 + 3362355.

It is an arithmetic number, because the mean of its divisors is an integer number (3362355).

Almost surely, 2^6724709 is an apocalyptic number.

It is an amenable number.

6724709 is a deficient number, since it is larger than the sum of its proper divisors (1).

6724709 is an equidigital number, since it uses as much as digits as its factorization.

6724709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 6724709 is about 2593.2043883967. The cubic root of 6724709 is about 188.7518275337.

The spelling of 6724709 in words is "six million, seven hundred twenty-four thousand, seven hundred nine".