199226663 has 4 divisors (see below), whose sum is σ = 199257168. Its totient is φ = 199196160.

The previous prime is 199226659. The next prime is 199226669. The reversal of 199226663 is 366622991.

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 199226663 - 2² = 199226659 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 (199226669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1043 + ... + 19988.

It is an arithmetic number, because the mean of its divisors is an integer number (49814292).

Almost surely, 2^199226663 is an apocalyptic number.

199226663 is a deficient number, since it is larger than the sum of its proper divisors (30505).

199226663 is an equidigital number, since it uses as much as digits as its factorization.

199226663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30504.

The product of its digits is 209952, while the sum is 44.

The square root of 199226663 is about 14114.7675503354. The cubic root of 199226663 is about 584.0488236766.

The spelling of 199226663 in words is "one hundred ninety-nine million, two hundred twenty-six thousand, six hundred sixty-three".