6670309 has 2 divisors, whose sum is σ = 6670310. Its totient is φ = 6670308.

The previous prime is 6670303. The next prime is 6670327. The reversal of 6670309 is 9030766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3814209 + 2856100 = 1953^2 + 1690^2 .

It is a cyclic number.

It is not a de Polignac number, because 6670309 - 2²¹ = 4573157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6670303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3335154 + 3335155.

It is an arithmetic number, because the mean of its divisors is an integer number (3335155).

Almost surely, 2^6670309 is an apocalyptic number.

It is an amenable number.

6670309 is a deficient number, since it is larger than the sum of its proper divisors (1).

6670309 is an equidigital number, since it uses as much as digits as its factorization.

6670309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 6670309 is about 2582.6941359751. The cubic root of 6670309 is about 188.2414752049.

The spelling of 6670309 in words is "six million, six hundred seventy thousand, three hundred nine".