959681 has 2 divisors, whose sum is σ = 959682. Its totient is φ = 959680.

The previous prime is 959677. The next prime is 959689. The reversal of 959681 is 186959.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 919681 + 40000 = 959^2 + 200^2 .

It is an emirp because it is prime and its reverse (186959) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 959681 - 2² = 959677 is a prime.

It is a super-2 number, since 2×959681² = 1841975243522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (959689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 479840 + 479841.

It is an arithmetic number, because the mean of its divisors is an integer number (479841).

2⁹⁵⁹⁶⁸¹ is an apocalyptic number.

It is an amenable number.

959681 is a deficient number, since it is larger than the sum of its proper divisors (1).

959681 is an equidigital number, since it uses as much as digits as its factorization.

959681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 38.

The square root of 959681 is about 979.6330945818. The cubic root of 959681 is about 98.6375550731.

The spelling of 959681 in words is "nine hundred fifty-nine thousand, six hundred eighty-one".