198085 has 8 divisors (see below), whose sum is σ = 240120. Its totient is φ = 156864.

The previous prime is 198083. The next prime is 198091. The reversal of 198085 is 580891.

It can be written as a sum of positive squares in 4 ways, for example, as 106276 + 91809 = 326^2 + 303^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 198085 - 2¹ = 198083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 751 + ... + 979.

It is an arithmetic number, because the mean of its divisors is an integer number (30015).

2¹⁹⁸⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

198085 is a deficient number, since it is larger than the sum of its proper divisors (42035).

198085 is a wasteful number, since it uses less digits than its factorization.

198085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 198085 is about 445.0674106245. The cubic root of 198085 is about 58.2931060521.

The spelling of 198085 in words is "one hundred ninety-eight thousand, eighty-five".