216850 has 12 divisors (see below), whose sum is σ = 403434. Its totient is φ = 86720.

The previous prime is 216841. The next prime is 216851. The reversal of 216850 is 58612.

It is a happy number.

216850 is nontrivially palindromic in base 6.

216850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 89401 + 127449 = 299^2 + 357^2 .

It is not an unprimeable number, because it can be changed into a prime (216851) by changing a digit.

216850 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, 2119 + ... + 2218.

2²¹⁶⁸⁵⁰ is an apocalyptic number.

216850 is a deficient number, since it is larger than the sum of its proper divisors (186584).

216850 is a wasteful number, since it uses less digits than its factorization.

216850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4349 (or 4344 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 216850 is about 465.6715580750. The cubic root of 216850 is about 60.0786006909.

The spelling of 216850 in words is "two hundred sixteen thousand, eight hundred fifty".