198806 has 8 divisors (see below), whose sum is σ = 301320. Its totient is φ = 98368.

The previous prime is 198769. The next prime is 198811. The reversal of 198806 is 608891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 198806.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251 + ... + 678.

It is an arithmetic number, because the mean of its divisors is an integer number (37665).

2¹⁹⁸⁸⁰⁶ is an apocalyptic number.

198806 is a deficient number, since it is larger than the sum of its proper divisors (102514).

198806 is a wasteful number, since it uses less digits than its factorization.

198806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 198806 is about 445.8766645610. The cubic root of 198806 is about 58.3637464991.

The spelling of 198806 in words is "one hundred ninety-eight thousand, eight hundred six".