8497217 has 2 divisors, whose sum is σ = 8497218. Its totient is φ = 8497216.

The previous prime is 8497213. The next prime is 8497219. The reversal of 8497217 is 7127948.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5837056 + 2660161 = 2416^2 + 1631^2 .

It is a cyclic number.

It is not a de Polignac number, because 8497217 - 2² = 8497213 is a prime.

Together with 8497219, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8497213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4248608 + 4248609.

It is an arithmetic number, because the mean of its divisors is an integer number (4248609).

Almost surely, 2^8497217 is an apocalyptic number.

It is an amenable number.

8497217 is a deficient number, since it is larger than the sum of its proper divisors (1).

8497217 is an equidigital number, since it uses as much as digits as its factorization.

8497217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 38.

The square root of 8497217 is about 2914.9986277870. The cubic root of 8497217 is about 204.0604796329.

The spelling of 8497217 in words is "eight million, four hundred ninety-seven thousand, two hundred seventeen".