199075566 has 16 divisors (see below), whose sum is σ = 400377600. Its totient is φ = 65987448.

The previous prime is 199075561. The next prime is 199075567. The reversal of 199075566 is 665570991.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199075561) 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 in 7 ways as a sum of consecutive naturals, for example, 91606 + ... + 93753.

It is an arithmetic number, because the mean of its divisors is an integer number (25023600).

Almost surely, 2^199075566 is an apocalyptic number.

199075566 is an abundant number, since it is smaller than the sum of its proper divisors (201302034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199075566 is a wasteful number, since it uses less digits than its factorization.

199075566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185543.

The product of its (nonzero) digits is 510300, while the sum is 48.

The square root of 199075566 is about 14109.4140913080. The cubic root of 199075566 is about 583.9011353722.

The spelling of 199075566 in words is "one hundred ninety-nine million, seventy-five thousand, five hundred sixty-six".