97682681 has 2 divisors, whose sum is σ = 97682682. Its totient is φ = 97682680.

The previous prime is 97682659. The next prime is 97682729. The reversal of 97682681 is 18628679.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70476025 + 27206656 = 8395^2 + 5216^2 .

It is a cyclic number.

It is not a de Polignac number, because 97682681 - 2²² = 93488377 is a prime.

It is a super-2 number, since 2×97682681² = 19083812334695522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (97682881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48841340 + 48841341.

It is an arithmetic number, because the mean of its divisors is an integer number (48841341).

Almost surely, 2^97682681 is an apocalyptic number.

It is an amenable number.

97682681 is a deficient number, since it is larger than the sum of its proper divisors (1).

97682681 is an equidigital number, since it uses as much as digits as its factorization.

97682681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 47.

The square root of 97682681 is about 9883.4549121246. The cubic root of 97682681 is about 460.5454792407.

The spelling of 97682681 in words is "ninety-seven million, six hundred eighty-two thousand, six hundred eighty-one".