Adding to 216085 its reverse (580612), we get a palindrome (796697).
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a congruent number.
It is an unprimeable number.
216085 is a Friedman number, since it can be written as 85+60^(2+1), using all its digits and the basic arithmetic operations.
2216085 is an apocalyptic number.
It is an amenable number.
216085 is a wasteful number, since it uses less digits than its factorization.
216085 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1907.
The square root of 216085 is about 464.8494379904. The cubic root of 216085 is about 60.0078693382.
The spelling of 216085 in words is "two hundred sixteen thousand, eighty-five".