204166206 has 36 divisors (see below), whose sum is σ = 458173872. Its totient is φ = 65703792.

The previous prime is 204166199. The next prime is 204166211. The reversal of 204166206 is 602661402.

It is a happy number.

204166206 is a `hidden beast` number, since 20 + 4 + 16 + 620 + 6 = 666.

204166206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 204166206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8395 + ... + 21881.

It is an arithmetic number, because the mean of its divisors is an integer number (12727052).

Almost surely, 2^204166206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204166206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229086936).

204166206 is an abundant number, since it is smaller than the sum of its proper divisors (254007666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204166206 is a wasteful number, since it uses less digits than its factorization.

204166206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13553 (or 13521 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 204166206 is about 14288.6740462508. The cubic root of 204166206 is about 588.8363601393.

The spelling of 204166206 in words is "two hundred four million, one hundred sixty-six thousand, two hundred six".