82698568717 has 2 divisors, whose sum is σ = 82698568718. Its totient is φ = 82698568716.

The previous prime is 82698568697. The next prime is 82698568721. The reversal of 82698568717 is 71786589628.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48861334116 + 33837234601 = 221046^2 + 183949^2 .

It is a cyclic number.

It is not a de Polignac number, because 82698568717 - 2³⁵ = 48338830349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82698568217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41349284358 + 41349284359.

It is an arithmetic number, because the mean of its divisors is an integer number (41349284359).

Almost surely, 2^82698568717 is an apocalyptic number.

It is an amenable number.

82698568717 is a deficient number, since it is larger than the sum of its proper divisors (1).

82698568717 is an equidigital number, since it uses as much as digits as its factorization.

82698568717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81285120, while the sum is 67.

The spelling of 82698568717 in words is "eighty-two billion, six hundred ninety-eight million, five hundred sixty-eight thousand, seven hundred seventeen".