206608 has 20 divisors (see below), whose sum is σ = 412300. Its totient is φ = 100224.

The previous prime is 206603. The next prime is 206623. The reversal of 206608 is 806602.

It can be written as a sum of positive squares in 2 ways, for example, as 169744 + 36864 = 412^2 + 192^2 .

It is not an unprimeable number, because it can be changed into a prime (206603) by changing a digit.

206608 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 3 ways as a sum of consecutive naturals, for example, 418 + ... + 766.

It is an arithmetic number, because the mean of its divisors is an integer number (20615).

2²⁰⁶⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

206608 is a deficient number, since it is larger than the sum of its proper divisors (205692).

206608 is a wasteful number, since it uses less digits than its factorization.

206608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 206608 is about 454.5415272558. The cubic root of 206608 is about 59.1174525183.

The spelling of 206608 in words is "two hundred six thousand, six hundred eight".