198604 has 24 divisors (see below), whose sum is σ = 409248. Its totient is φ = 82560.

The previous prime is 198599. The next prime is 198613. The reversal of 198604 is 406891.

198604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an Ulam number.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1062 + ... + 1234.

It is an arithmetic number, because the mean of its divisors is an integer number (17052).

2¹⁹⁸⁶⁰⁴ is an apocalyptic number.

198604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204624).

198604 is an abundant number, since it is smaller than the sum of its proper divisors (210644).

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

198604 is a wasteful number, since it uses less digits than its factorization.

198604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 198604 is about 445.6500869516. The cubic root of 198604 is about 58.3439726626.

The spelling of 198604 in words is "one hundred ninety-eight thousand, six hundred four".