206199 has 16 divisors (see below), whose sum is σ = 349440. Its totient is φ = 117720.

The previous prime is 206197. The next prime is 206203. The reversal of 206199 is 991602.

It is a happy number.

It is not a de Polignac number, because 206199 - 2¹ = 206197 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357 + ... + 734.

It is an arithmetic number, because the mean of its divisors is an integer number (21840).

2²⁰⁶¹⁹⁹ is an apocalyptic number.

206199 is a deficient number, since it is larger than the sum of its proper divisors (143241).

206199 is a wasteful number, since it uses less digits than its factorization.

206199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107 (or 1101 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 206199 is about 454.0914004911. The cubic root of 206199 is about 59.0784172267.

The spelling of 206199 in words is "two hundred six thousand, one hundred ninety-nine".