199764067 has 2 divisors, whose sum is σ = 199764068. Its totient is φ = 199764066.

The previous prime is 199764023. The next prime is 199764077. The reversal of 199764067 is 760467991.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199764067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199764067.

It is not a weakly prime, because it can be changed into another prime (199764007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99882033 + 99882034.

It is an arithmetic number, because the mean of its divisors is an integer number (99882034).

Almost surely, 2^199764067 is an apocalyptic number.

199764067 is a deficient number, since it is larger than the sum of its proper divisors (1).

199764067 is an equidigital number, since it uses as much as digits as its factorization.

199764067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 199764067 is about 14133.7916710273. The cubic root of 199764067 is about 584.5734997333.

The spelling of 199764067 in words is "one hundred ninety-nine million, seven hundred sixty-four thousand, sixty-seven".