199475663 has 4 divisors (see below), whose sum is σ = 200180808. Its totient is φ = 198770520.

The previous prime is 199475657. The next prime is 199475677. The reversal of 199475663 is 366574991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 199475663 - 2⁶ = 199475599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199475693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352148 + ... + 352713.

It is an arithmetic number, because the mean of its divisors is an integer number (50045202).

Almost surely, 2^199475663 is an apocalyptic number.

199475663 is a deficient number, since it is larger than the sum of its proper divisors (705145).

199475663 is an equidigital number, since it uses as much as digits as its factorization.

199475663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705144.

The product of its digits is 1224720, while the sum is 50.

The square root of 199475663 is about 14123.5853450885. The cubic root of 199475663 is about 584.2920434846.

The spelling of 199475663 in words is "one hundred ninety-nine million, four hundred seventy-five thousand, six hundred sixty-three".