97816597 has 2 divisors, whose sum is σ = 97816598. Its totient is φ = 97816596.

The previous prime is 97816591. The next prime is 97816601. The reversal of 97816597 is 79561879.

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., 89756676 + 8059921 = 9474^2 + 2839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97816597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97816591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48908298 + 48908299.

It is an arithmetic number, because the mean of its divisors is an integer number (48908299).

Almost surely, 2^97816597 is an apocalyptic number.

It is an amenable number.

97816597 is a deficient number, since it is larger than the sum of its proper divisors (1).

97816597 is an equidigital number, since it uses as much as digits as its factorization.

97816597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 52.

The square root of 97816597 is about 9890.2273482463. The cubic root of 97816597 is about 460.7558414921.

The spelling of 97816597 in words is "ninety-seven million, eight hundred sixteen thousand, five hundred ninety-seven".