722317 has 2 divisors, whose sum is σ = 722318. Its totient is φ = 722316.

The previous prime is 722311. The next prime is 722321. The reversal of 722317 is 713227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 509796 + 212521 = 714^2 + 461^2 .

It is an emirp because it is prime and its reverse (713227) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361158 + 361159.

It is an arithmetic number, because the mean of its divisors is an integer number (361159).

2⁷²²³¹⁷ is an apocalyptic number.

It is an amenable number.

722317 is a deficient number, since it is larger than the sum of its proper divisors (1).

722317 is an equidigital number, since it uses as much as digits as its factorization.

722317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 588, while the sum is 22.

The square root of 722317 is about 849.8923461239. The cubic root of 722317 is about 89.7241347139.

The spelling of 722317 in words is "seven hundred twenty-two thousand, three hundred seventeen", and thus it is an iban number.