199673 has 2 divisors, whose sum is σ = 199674. Its totient is φ = 199672.

The previous prime is 199669. The next prime is 199679. The reversal of 199673 is 376991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169744 + 29929 = 412^2 + 173^2 .

It is a cyclic number.

It is not a de Polignac number, because 199673 - 2² = 199669 is a prime.

It is not a weakly prime, because it can be changed into another prime (199679) 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, 99836 + 99837.

It is an arithmetic number, because the mean of its divisors is an integer number (99837).

2¹⁹⁹⁶⁷³ is an apocalyptic number.

It is an amenable number.

199673 is a deficient number, since it is larger than the sum of its proper divisors (1).

199673 is an equidigital number, since it uses as much as digits as its factorization.

199673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206, while the sum is 35.

The square root of 199673 is about 446.8478488255. The cubic root of 199673 is about 58.4484655850.

The spelling of 199673 in words is "one hundred ninety-nine thousand, six hundred seventy-three".