97656917 has 2 divisors, whose sum is σ = 97656918. Its totient is φ = 97656916.

The previous prime is 97656893. The next prime is 97656931. The reversal of 97656917 is 71965679.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88378801 + 9278116 = 9401^2 + 3046^2 .

It is a cyclic number.

It is not a de Polignac number, because 97656917 - 2⁸ = 97656661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97656967) 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, 48828458 + 48828459.

It is an arithmetic number, because the mean of its divisors is an integer number (48828459).

Almost surely, 2^97656917 is an apocalyptic number.

It is an amenable number.

97656917 is a deficient number, since it is larger than the sum of its proper divisors (1).

97656917 is an equidigital number, since it uses as much as digits as its factorization.

97656917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 714420, while the sum is 50.

The square root of 97656917 is about 9882.1514357957. The cubic root of 97656917 is about 460.5049857539.

The spelling of 97656917 in words is "ninety-seven million, six hundred fifty-six thousand, nine hundred seventeen".