97708717 has 2 divisors, whose sum is σ = 97708718. Its totient is φ = 97708716.

The previous prime is 97708649. The next prime is 97708729. The reversal of 97708717 is 71780779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67798756 + 29909961 = 8234^2 + 5469^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97708717 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97708747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48854358 + 48854359.

It is an arithmetic number, because the mean of its divisors is an integer number (48854359).

Almost surely, 2^97708717 is an apocalyptic number.

It is an amenable number.

97708717 is a deficient number, since it is larger than the sum of its proper divisors (1).

97708717 is an equidigital number, since it uses as much as digits as its factorization.

97708717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172872, while the sum is 46.

The square root of 97708717 is about 9884.7719751140. The cubic root of 97708717 is about 460.5863929994.

The spelling of 97708717 in words is "ninety-seven million, seven hundred eight thousand, seven hundred seventeen".