198065 has 8 divisors (see below), whose sum is σ = 271680. Its totient is φ = 135792.

The previous prime is 198047. The next prime is 198073. The reversal of 198065 is 560891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198065 - 2¹⁶ = 132529 is a prime.

It is a plaindrome in base 11.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 198065.

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, 2795 + ... + 2864.

It is an arithmetic number, because the mean of its divisors is an integer number (33960).

2¹⁹⁸⁰⁶⁵ is an apocalyptic number.

It is an amenable number.

198065 is a deficient number, since it is larger than the sum of its proper divisors (73615).

198065 is an equidigital number, since it uses as much as digits as its factorization.

198065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5671.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 198065 is about 445.0449415509. The cubic root of 198065 is about 58.2911440974.

The spelling of 198065 in words is "one hundred ninety-eight thousand, sixty-five".