961600681 has 2 divisors, whose sum is σ = 961600682. Its totient is φ = 961600680.

The previous prime is 961600669. The next prime is 961600711. The reversal of 961600681 is 186006169.

961600681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 866713600 + 94887081 = 29440^2 + 9741^2 .

It is a cyclic number.

It is not a de Polignac number, because 961600681 - 2⁵ = 961600649 is a prime.

It is a super-2 number, since 2×961600681² = 1849351739399327522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 961600681.

It is not a weakly prime, because it can be changed into another prime (961670681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480800340 + 480800341.

It is an arithmetic number, because the mean of its divisors is an integer number (480800341).

Almost surely, 2^961600681 is an apocalyptic number.

It is an amenable number.

961600681 is a deficient number, since it is larger than the sum of its proper divisors (1).

961600681 is an equidigital number, since it uses as much as digits as its factorization.

961600681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 961600681 is about 31009.6868897446. The cubic root of 961600681 is about 987.0328056745.

The spelling of 961600681 in words is "nine hundred sixty-one million, six hundred thousand, six hundred eighty-one".