198922668 has 24 divisors (see below), whose sum is σ = 530460672. Its totient is φ = 56835024.

The previous prime is 198922667. The next prime is 198922673. The reversal of 198922668 is 866229891.

It is a self number, because there is not a number n which added to its sum of digits gives 198922668.

It is not an unprimeable number, because it can be changed into a prime (198922667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1183980 + ... + 1184147.

It is an arithmetic number, because the mean of its divisors is an integer number (22102528).

Almost surely, 2^198922668 is an apocalyptic number.

It is an amenable number.

198922668 is an abundant number, since it is smaller than the sum of its proper divisors (331538004).

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

198922668 is a wasteful number, since it uses less digits than its factorization.

198922668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2368141 (or 2368139 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The square root of 198922668 is about 14103.9947532605. The cubic root of 198922668 is about 583.7516106071.

The spelling of 198922668 in words is "one hundred ninety-eight million, nine hundred twenty-two thousand, six hundred sixty-eight".