68965961 has 2 divisors, whose sum is σ = 68965962. Its totient is φ = 68965960.

The previous prime is 68965927. The next prime is 68965993. The reversal of 68965961 is 16956986.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56715961 + 12250000 = 7531^2 + 3500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68965961 is a prime.

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 (68965901) 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, 34482980 + 34482981.

It is an arithmetic number, because the mean of its divisors is an integer number (34482981).

Almost surely, 2^68965961 is an apocalyptic number.

It is an amenable number.

68965961 is a deficient number, since it is larger than the sum of its proper divisors (1).

68965961 is an equidigital number, since it uses as much as digits as its factorization.

68965961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 50.

The square root of 68965961 is about 8304.5747031380. The cubic root of 68965961 is about 410.0891358848.

The spelling of 68965961 in words is "sixty-eight million, nine hundred sixty-five thousand, nine hundred sixty-one".