613343309 has 2 divisors, whose sum is σ = 613343310. Its totient is φ = 613343308.

The previous prime is 613343303. The next prime is 613343317. The reversal of 613343309 is 903343316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 531440809 + 81902500 = 23053^2 + 9050^2 .

It is a cyclic number.

It is not a de Polignac number, because 613343309 - 2⁴ = 613343293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613343303) 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, 306671654 + 306671655.

It is an arithmetic number, because the mean of its divisors is an integer number (306671655).

Almost surely, 2^613343309 is an apocalyptic number.

It is an amenable number.

613343309 is a deficient number, since it is larger than the sum of its proper divisors (1).

613343309 is an equidigital number, since it uses as much as digits as its factorization.

613343309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 32.

The square root of 613343309 is about 24765.7688957965. The cubic root of 613343309 is about 849.6392051239.

The spelling of 613343309 in words is "six hundred thirteen million, three hundred forty-three thousand, three hundred nine".