198147 has 6 divisors (see below), whose sum is σ = 265228. Its totient is φ = 131584.

The previous prime is 198139. The next prime is 198173. The reversal of 198147 is 741891.

198147 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 198147 - 2³ = 198139 is a prime.

It is a super-3 number, since 3×198147³ = 23339081408767569, which contains 333 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 198147.

It is not an unprimeable number, because it can be changed into a prime (198127) 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, 643 + ... + 899.

2¹⁹⁸¹⁴⁷ is an apocalyptic number.

198147 is a deficient number, since it is larger than the sum of its proper divisors (67081).

198147 is an frugal number, since it uses more digits than its factorization.

198147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 260 counting only the distinct ones).

The product of its digits is 2016, while the sum is 30.

The square root of 198147 is about 445.1370575452. The cubic root of 198147 is about 58.2991872724.

The spelling of 198147 in words is "one hundred ninety-eight thousand, one hundred forty-seven".