198601 has 4 divisors (see below), whose sum is σ = 213892.
Its totient is φ = 183312.
The previous prime is 198599. The next prime is 198613. The reversal of 198601 is 106891.
198601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 106891 = 139 ⋅769.
It can be written as a sum of positive squares in 2 ways, for example, as 22201 + 176400 = 149^2 + 420^2
It is a cyclic number.
It is not a de Polignac number, because 198601 - 21 = 198599 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (198641) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7626 + ... + 7651.
It is an arithmetic number, because the mean of its divisors is an integer number (53473).
2198601 is an apocalyptic number.
It is an amenable number.
198601 is a deficient number, since it is larger than the sum of its proper divisors (15291).
198601 is a wasteful number, since it uses less digits than its factorization.
198601 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 15290.
The product of its (nonzero) digits is 432, while the sum is 25.
The square root of 198601 is about 445.6467210695.
The cubic root of 198601 is about 58.3436788907.
The spelling of 198601 in words is "one hundred ninety-eight thousand, six hundred one".