198386 has 8 divisors (see below), whose sum is σ = 299484. Its totient is φ = 98560.

The previous prime is 198377. The next prime is 198391. The reversal of 198386 is 683891.

198386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 198025 + 361 = 445^2 + 19^2 .

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

It is an unprimeable number.

198386 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386 + ... + 738.

2¹⁹⁸³⁸⁶ is an apocalyptic number.

198386 is a deficient number, since it is larger than the sum of its proper divisors (101098).

198386 is a wasteful number, since it uses less digits than its factorization.

198386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636.

The product of its digits is 10368, while the sum is 35.

The square root of 198386 is about 445.4054332852. The cubic root of 198386 is about 58.3226175328.

The spelling of 198386 in words is "one hundred ninety-eight thousand, three hundred eighty-six".