966799681 has 2 divisors, whose sum is σ = 966799682. Its totient is φ = 966799680.

The previous prime is 966799649. The next prime is 966799699. The reversal of 966799681 is 186997669.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 900540081 + 66259600 = 30009^2 + 8140^2 .

It is a cyclic number.

It is not a de Polignac number, because 966799681 - 2⁵ = 966799649 is a prime.

It is a super-2 number, since 2×966799681² = 1869403246363403522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (966799621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 483399840 + 483399841.

It is an arithmetic number, because the mean of its divisors is an integer number (483399841).

Almost surely, 2^966799681 is an apocalyptic number.

It is an amenable number.

966799681 is a deficient number, since it is larger than the sum of its proper divisors (1).

966799681 is an equidigital number, since it uses as much as digits as its factorization.

966799681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8817984, while the sum is 61.

The square root of 966799681 is about 31093.4025317269. The cubic root of 966799681 is about 988.8084433099.

The spelling of 966799681 in words is "nine hundred sixty-six million, seven hundred ninety-nine thousand, six hundred eighty-one".