9705802681 has 2 divisors, whose sum is σ = 9705802682. Its totient is φ = 9705802680.

The previous prime is 9705802657. The next prime is 9705802697. The reversal of 9705802681 is 1862085079.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8571797056 + 1134005625 = 92584^2 + 33675^2 .

It is a cyclic number.

It is not a de Polignac number, because 9705802681 - 2⁷ = 9705802553 is a prime.

It is a super-2 number, since 2×9705802681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9705802651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4852901340 + 4852901341.

It is an arithmetic number, because the mean of its divisors is an integer number (4852901341).

Almost surely, 2^9705802681 is an apocalyptic number.

It is an amenable number.

9705802681 is a deficient number, since it is larger than the sum of its proper divisors (1).

9705802681 is an equidigital number, since it uses as much as digits as its factorization.

9705802681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 46.

The square root of 9705802681 is about 98518.0322631344. The cubic root of 9705802681 is about 2133.0964157121.

The spelling of 9705802681 in words is "nine billion, seven hundred five million, eight hundred two thousand, six hundred eighty-one".