9997697 has 2 divisors, whose sum is σ = 9997698. Its totient is φ = 9997696.

The previous prime is 9997661. The next prime is 9997703. The reversal of 9997697 is 7967999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9991921 + 5776 = 3161^2 + 76^2 .

It is a cyclic number.

It is not a de Polignac number, because 9997697 - 2⁸ = 9997441 is a prime.

It is not a weakly prime, because it can be changed into another prime (9997627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4998848 + 4998849.

It is an arithmetic number, because the mean of its divisors is an integer number (4998849).

Almost surely, 2^9997697 is an apocalyptic number.

It is an amenable number.

9997697 is a deficient number, since it is larger than the sum of its proper divisors (1).

9997697 is an equidigital number, since it uses as much as digits as its factorization.

9997697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1928934, while the sum is 56.

The square root of 9997697 is about 3161.9135029283. The cubic root of 9997697 is about 215.4269288564.

The spelling of 9997697 in words is "nine million, nine hundred ninety-seven thousand, six hundred ninety-seven".