8997217 has 2 divisors, whose sum is σ = 8997218. Its totient is φ = 8997216.

The previous prime is 8997167. The next prime is 8997239. The reversal of 8997217 is 7127998.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8433216 + 564001 = 2904^2 + 751^2 .

It is a cyclic number.

It is not a de Polignac number, because 8997217 - 2²³ = 608609 is a prime.

It is not a weakly prime, because it can be changed into another prime (8997017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4498608 + 4498609.

It is an arithmetic number, because the mean of its divisors is an integer number (4498609).

Almost surely, 2^8997217 is an apocalyptic number.

It is an amenable number.

8997217 is a deficient number, since it is larger than the sum of its proper divisors (1).

8997217 is an equidigital number, since it uses as much as digits as its factorization.

8997217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 43.

The square root of 8997217 is about 2999.5361308042. The cubic root of 8997217 is about 207.9869398235.

The spelling of 8997217 in words is "eight million, nine hundred ninety-seven thousand, two hundred seventeen".