6604709 has 2 divisors, whose sum is σ = 6604710. Its totient is φ = 6604708.

The previous prime is 6604699. The next prime is 6604727. The reversal of 6604709 is 9074066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3724900 + 2879809 = 1930^2 + 1697^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6604709 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6604009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3302354 + 3302355.

It is an arithmetic number, because the mean of its divisors is an integer number (3302355).

Almost surely, 2^6604709 is an apocalyptic number.

It is an amenable number.

6604709 is a deficient number, since it is larger than the sum of its proper divisors (1).

6604709 is an equidigital number, since it uses as much as digits as its factorization.

6604709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 6604709 is about 2569.9628401983. The cubic root of 6604709 is about 187.6223462242.

The spelling of 6604709 in words is "six million, six hundred four thousand, seven hundred nine".