198906 has 8 divisors (see below), whose sum is σ = 397824. Its totient is φ = 66300.

The previous prime is 198901. The next prime is 198929. The reversal of 198906 is 609891.

It is a happy number.

198906 is nontrivially palindromic in base 13.

198906 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

198906 is an admirable number.

198906 is an undulating number in base 13.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (198901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16570 + ... + 16581.

It is an arithmetic number, because the mean of its divisors is an integer number (49728).

2¹⁹⁸⁹⁰⁶ is an apocalyptic number.

198906 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

198906 is a wasteful number, since it uses less digits than its factorization.

198906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33156.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 198906 is about 445.9887890968. The cubic root of 198906 is about 58.3735305705.

The spelling of 198906 in words is "one hundred ninety-eight thousand, nine hundred six".