198065886 has 16 divisors (see below), whose sum is σ = 396522000. Its totient is φ = 65956928.

The previous prime is 198065873. The next prime is 198065887. The reversal of 198065886 is 688560891.

198065886 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198065887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9441 + ... + 22028.

It is an arithmetic number, because the mean of its divisors is an integer number (24782625).

Almost surely, 2^198065886 is an apocalyptic number.

198065886 is an abundant number, since it is smaller than the sum of its proper divisors (198456114).

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

198065886 is a wasteful number, since it uses less digits than its factorization.

198065886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32523.

The product of its (nonzero) digits is 829440, while the sum is 51.

The square root of 198065886 is about 14073.5882418095. The cubic root of 198065886 is about 582.9123101480.

The spelling of 198065886 in words is "one hundred ninety-eight million, sixty-five thousand, eight hundred eighty-six".