198071 has 4 divisors (see below), whose sum is σ = 202944. Its totient is φ = 193200.

The previous prime is 198047. The next prime is 198073. The reversal of 198071 is 170891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 170891 = 7 ⋅24413.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 198071.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 198071.

It is not an unprimeable number, because it can be changed into a prime (198073) 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, 2375 + ... + 2456.

It is an arithmetic number, because the mean of its divisors is an integer number (50736).

2¹⁹⁸⁰⁷¹ is an apocalyptic number.

198071 is a deficient number, since it is larger than the sum of its proper divisors (4873).

198071 is an equidigital number, since it uses as much as digits as its factorization.

198071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4872.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 198071 is about 445.0516823921. The cubic root of 198071 is about 58.2917326977.

The spelling of 198071 in words is "one hundred ninety-eight thousand, seventy-one".