216198 has 12 divisors (see below), whose sum is σ = 468468. Its totient is φ = 72060.

The previous prime is 216179. The next prime is 216211. The reversal of 216198 is 891612.

216198 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

216198 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5988 + ... + 6023.

It is an arithmetic number, because the mean of its divisors is an integer number (39039).

2²¹⁶¹⁹⁸ is an apocalyptic number.

216198 is an abundant number, since it is smaller than the sum of its proper divisors (252270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216198 is a wasteful number, since it uses less digits than its factorization.

216198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12019 (or 12016 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 216198 is about 464.9709668356. The cubic root of 216198 is about 60.0183277343.

Adding to 216198 its sum of digits (27), we get a square (216225 = 465²).

It can be divided in two parts, 216 and 198, that added together give a palindrome (414).

The spelling of 216198 in words is "two hundred sixteen thousand, one hundred ninety-eight".