198106568 has 16 divisors (see below), whose sum is σ = 405218160. Its totient is φ = 90048400.

The previous prime is 198106561. The next prime is 198106607. The reversal of 198106568 is 865601891.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (198106561) 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, 1125518 + ... + 1125693.

It is an arithmetic number, because the mean of its divisors is an integer number (25326135).

Almost surely, 2^198106568 is an apocalyptic number.

It is an amenable number.

198106568 is an abundant number, since it is smaller than the sum of its proper divisors (207111592).

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

198106568 is a wasteful number, since it uses less digits than its factorization.

198106568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251228 (or 2251224 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 198106568 is about 14075.0334990720. The cubic root of 198106568 is about 582.9522167597.

The spelling of 198106568 in words is "one hundred ninety-eight million, one hundred six thousand, five hundred sixty-eight".