959978681 has 2 divisors, whose sum is σ = 959978682. Its totient is φ = 959978680.

The previous prime is 959978659. The next prime is 959978693. The reversal of 959978681 is 186879959.

959978681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 540097600 + 419881081 = 23240^2 + 20491^2 .

It is a cyclic number.

It is not a de Polignac number, because 959978681 - 2²² = 955784377 is a prime.

It is a super-2 number, since 2×959978681² = 1843118135948999522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (959978081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 479989340 + 479989341.

It is an arithmetic number, because the mean of its divisors is an integer number (479989341).

Almost surely, 2^959978681 is an apocalyptic number.

It is an amenable number.

959978681 is a deficient number, since it is larger than the sum of its proper divisors (1).

959978681 is an equidigital number, since it uses as much as digits as its factorization.

959978681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9797760, while the sum is 62.

The square root of 959978681 is about 30983.5227338661. The cubic root of 959978681 is about 986.4775272927.

The spelling of 959978681 in words is "nine hundred fifty-nine million, nine hundred seventy-eight thousand, six hundred eighty-one".