717304213 has 2 divisors, whose sum is σ = 717304214. Its totient is φ = 717304212.

The previous prime is 717304201. The next prime is 717304223. The reversal of 717304213 is 312403717.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 650097009 + 67207204 = 25497^2 + 8198^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-717304213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (717304223) 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, 358652106 + 358652107.

It is an arithmetic number, because the mean of its divisors is an integer number (358652107).

Almost surely, 2^717304213 is an apocalyptic number.

It is an amenable number.

717304213 is a deficient number, since it is larger than the sum of its proper divisors (1).

717304213 is an equidigital number, since it uses as much as digits as its factorization.

717304213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 717304213 is about 26782.5355969146. The cubic root of 717304213 is about 895.1609473044.

The spelling of 717304213 in words is "seven hundred seventeen million, three hundred four thousand, two hundred thirteen".