717622481 has 2 divisors, whose sum is σ = 717622482. Its totient is φ = 717622480.

The previous prime is 717622469. The next prime is 717622553. The reversal of 717622481 is 184226717.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 454371856 + 263250625 = 21316^2 + 16225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-717622481 is a prime.

It is a super-2 number, since 2×717622481² = 1029964050473190722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (717622681) 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, 358811240 + 358811241.

It is an arithmetic number, because the mean of its divisors is an integer number (358811241).

Almost surely, 2^717622481 is an apocalyptic number.

It is an amenable number.

717622481 is a deficient number, since it is larger than the sum of its proper divisors (1).

717622481 is an equidigital number, since it uses as much as digits as its factorization.

717622481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37632, while the sum is 38.

The square root of 717622481 is about 26788.4766457520. The cubic root of 717622481 is about 895.2933220824.

The spelling of 717622481 in words is "seven hundred seventeen million, six hundred twenty-two thousand, four hundred eighty-one".