208166 has 8 divisors (see below), whose sum is σ = 356880. Its totient is φ = 89208.

The previous prime is 208147. The next prime is 208189. The reversal of 208166 is 661802.

208166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

208166 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 3 ways as a sum of consecutive naturals, for example, 7421 + ... + 7448.

It is an arithmetic number, because the mean of its divisors is an integer number (44610).

2²⁰⁸¹⁶⁶ is an apocalyptic number.

208166 is a deficient number, since it is larger than the sum of its proper divisors (148714).

208166 is a wasteful number, since it uses less digits than its factorization.

208166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14878.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 208166 is about 456.2521232827. The cubic root of 208166 is about 59.2656791752.

Adding to 208166 its reverse (661802), we get a palindrome (869968).

The spelling of 208166 in words is "two hundred eight thousand, one hundred sixty-six".