999968573 has 2 divisors, whose sum is σ = 999968574. Its totient is φ = 999968572.

The previous prime is 999968561. The next prime is 999968587. The reversal of 999968573 is 375869999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 999950884 + 17689 = 31622^2 + 133^2 .

It is a cyclic number.

It is not a de Polignac number, because 999968573 - 2¹⁸ = 999706429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999968513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499984286 + 499984287.

It is an arithmetic number, because the mean of its divisors is an integer number (499984287).

Almost surely, 2^999968573 is an apocalyptic number.

It is an amenable number.

999968573 is a deficient number, since it is larger than the sum of its proper divisors (1).

999968573 is an equidigital number, since it uses as much as digits as its factorization.

999968573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33067440, while the sum is 65.

The square root of 999968573 is about 31622.2796932795. The cubic root of 999968573 is about 999.9895242236.

The spelling of 999968573 in words is "nine hundred ninety-nine million, nine hundred sixty-eight thousand, five hundred seventy-three".