216199 has 4 divisors (see below), whose sum is σ = 217800. Its totient is φ = 214600.

The previous prime is 216179. The next prime is 216211. The reversal of 216199 is 991612.

216199 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216199 - 2⁷ = 216071 is a prime.

It is a Duffinian number.

216199 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216119) 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, 577 + ... + 874.

It is an arithmetic number, because the mean of its divisors is an integer number (54450).

2²¹⁶¹⁹⁹ is an apocalyptic number.

216199 is a deficient number, since it is larger than the sum of its proper divisors (1601).

216199 is a wasteful number, since it uses less digits than its factorization.

216199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600.

The product of its digits is 972, while the sum is 28.

The square root of 216199 is about 464.9720421703. The cubic root of 216199 is about 60.0184202702.

The spelling of 216199 in words is "two hundred sixteen thousand, one hundred ninety-nine".