198594 has 48 divisors (see below), whose sum is σ = 505440. Its totient is φ = 55680.

The previous prime is 198593. The next prime is 198599. The reversal of 198594 is 495891.

198594 is a modest number, since divided by 594 gives 198 as remainder.

It is not an unprimeable number, because it can be changed into a prime (198593) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3337 + ... + 3395.

It is an arithmetic number, because the mean of its divisors is an integer number (10530).

2¹⁹⁸⁵⁹⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198594, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252720).

198594 is an abundant number, since it is smaller than the sum of its proper divisors (306846).

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

198594 is a wasteful number, since it uses less digits than its factorization.

198594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 92 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 198594 is about 445.6388672457. The cubic root of 198594 is about 58.3429934115.

The spelling of 198594 in words is "one hundred ninety-eight thousand, five hundred ninety-four".