199666224 has 60 divisors (see below), whose sum is σ = 591665256. Its totient is φ = 62639616.

The previous prime is 199666223. The next prime is 199666253. The reversal of 199666224 is 422666991.

199666224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 199666224.

It is not an unprimeable number, because it can be changed into a prime (199666223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38334 + ... + 43229.

Almost surely, 2^199666224 is an apocalyptic number.

It is an amenable number.

199666224 is an abundant number, since it is smaller than the sum of its proper divisors (391999032).

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

199666224 is a wasteful number, since it uses less digits than its factorization.

199666224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81594 (or 81585 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 199666224 is about 14130.3299324538. The cubic root of 199666224 is about 584.4780441851.

The spelling of 199666224 in words is "one hundred ninety-nine million, six hundred sixty-six thousand, two hundred twenty-four".