97656329 has 2 divisors, whose sum is σ = 97656330. Its totient is φ = 97656328.

The previous prime is 97656289. The next prime is 97656331. The reversal of 97656329 is 92365679.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70896400 + 26759929 = 8420^2 + 5173^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97656329 is a prime.

Together with 97656331, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97656359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48828164 + 48828165.

It is an arithmetic number, because the mean of its divisors is an integer number (48828165).

Almost surely, 2^97656329 is an apocalyptic number.

It is an amenable number.

97656329 is a deficient number, since it is larger than the sum of its proper divisors (1).

97656329 is an equidigital number, since it uses as much as digits as its factorization.

97656329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 47.

The square root of 97656329 is about 9882.1216851443. The cubic root of 97656329 is about 460.5040615064.

The spelling of 97656329 in words is "ninety-seven million, six hundred fifty-six thousand, three hundred twenty-nine".