9897617 has 2 divisors, whose sum is σ = 9897618. Its totient is φ = 9897616.

The previous prime is 9897599. The next prime is 9897631. The reversal of 9897617 is 7167989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6599761 + 3297856 = 2569^2 + 1816^2 .

It is a cyclic number.

It is not a de Polignac number, because 9897617 - 2⁸ = 9897361 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9897637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4948808 + 4948809.

It is an arithmetic number, because the mean of its divisors is an integer number (4948809).

Almost surely, 2^9897617 is an apocalyptic number.

It is an amenable number.

9897617 is a deficient number, since it is larger than the sum of its proper divisors (1).

9897617 is an equidigital number, since it uses as much as digits as its factorization.

9897617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 47.

The square root of 9897617 is about 3146.0478381614. The cubic root of 9897617 is about 214.7056870779.

The spelling of 9897617 in words is "nine million, eight hundred ninety-seven thousand, six hundred seventeen".