717397 has 2 divisors, whose sum is σ = 717398. Its totient is φ = 717396.

The previous prime is 717341. The next prime is 717413. The reversal of 717397 is 793717.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 715716 + 1681 = 846^2 + 41^2 .

It is an emirp because it is prime and its reverse (793717) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-717397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (717317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358698 + 358699.

It is an arithmetic number, because the mean of its divisors is an integer number (358699).

2⁷¹⁷³⁹⁷ is an apocalyptic number.

It is an amenable number.

717397 is a deficient number, since it is larger than the sum of its proper divisors (1).

717397 is an equidigital number, since it uses as much as digits as its factorization.

717397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9261, while the sum is 34.

The square root of 717397 is about 846.9929161451. The cubic root of 717397 is about 89.5199543536.

The spelling of 717397 in words is "seven hundred seventeen thousand, three hundred ninety-seven".