206090 has 16 divisors (see below), whose sum is σ = 381672. Its totient is φ = 80064.

The previous prime is 206083. The next prime is 206123. The reversal of 206090 is 90602.

206090 is digitally balanced in base 3, 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 4 ways, for example, as 162409 + 43681 = 403^2 + 209^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92 + ... + 648.

2²⁰⁶⁰⁹⁰ is an apocalyptic number.

206090 is a deficient number, since it is larger than the sum of its proper divisors (175582).

206090 is a wasteful number, since it uses less digits than its factorization.

206090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 206090 is about 453.9713647357. The cubic root of 206090 is about 59.0680054683.

Adding to 206090 its reverse (90602), we get a palindrome (296692).

The spelling of 206090 in words is "two hundred six thousand, ninety".