198299866 has 16 divisors (see below), whose sum is σ = 316776744. Its totient is φ = 92775424.

The previous prime is 198299863. The next prime is 198299869. The reversal of 198299866 is 668992891.

It is an interprime number because it is at equal distance from previous prime (198299863) and next prime (198299869).

It can be written as a sum of positive squares in 4 ways, for example, as 189860841 + 8439025 = 13779^2 + 2905^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 198299866.

It is not an unprimeable number, because it can be changed into a prime (198299863) 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, 10975 + ... + 22738.

Almost surely, 2^198299866 is an apocalyptic number.

198299866 is a deficient number, since it is larger than the sum of its proper divisors (118476878).

198299866 is a wasteful number, since it uses less digits than its factorization.

198299866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33905.

The product of its digits is 3359232, while the sum is 58.

The square root of 198299866 is about 14081.8985225715. The cubic root of 198299866 is about 583.1417559374.

The spelling of 198299866 in words is "one hundred ninety-eight million, two hundred ninety-nine thousand, eight hundred sixty-six".