968666173 has 2 divisors, whose sum is σ = 968666174. Its totient is φ = 968666172.

The previous prime is 968666147. The next prime is 968666219. The reversal of 968666173 is 371666869.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 703204324 + 265461849 = 26518^2 + 16293^2 .

968666173 is a truncatable prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-968666173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 968666173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (968696173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484333086 + 484333087.

It is an arithmetic number, because the mean of its divisors is an integer number (484333087).

Almost surely, 2^968666173 is an apocalyptic number.

It is an amenable number.

968666173 is a deficient number, since it is larger than the sum of its proper divisors (1).

968666173 is an equidigital number, since it uses as much as digits as its factorization.

968666173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 52.

The square root of 968666173 is about 31123.4023365056. The cubic root of 968666173 is about 989.4443615384. Note that the first 3 decimals are identical.

The spelling of 968666173 in words is "nine hundred sixty-eight million, six hundred sixty-six thousand, one hundred seventy-three".