198603 has 6 divisors (see below), whose sum is σ = 286884. Its totient is φ = 132396.

The previous prime is 198599. The next prime is 198613. The reversal of 198603 is 306891.

It is not a de Polignac number, because 198603 - 2² = 198599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198613) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11025 + ... + 11042.

It is an arithmetic number, because the mean of its divisors is an integer number (47814).

2¹⁹⁸⁶⁰³ is an apocalyptic number.

198603 is a deficient number, since it is larger than the sum of its proper divisors (88281).

198603 is a wasteful number, since it uses less digits than its factorization.

198603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22073 (or 22070 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 198603 is about 445.6489649937. The cubic root of 198603 is about 58.3438747389.

The spelling of 198603 in words is "one hundred ninety-eight thousand, six hundred three".