205271166 has 8 divisors (see below), whose sum is σ = 410542344. Its totient is φ = 68423720.

The previous prime is 205271149. The next prime is 205271179. The reversal of 205271166 is 661172502.

205271166 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.

205271166 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17105925 + ... + 17105936.

It is an arithmetic number, because the mean of its divisors is an integer number (51317793).

Almost surely, 2^205271166 is an apocalyptic number.

205271166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

205271166 is a wasteful number, since it uses less digits than its factorization.

205271166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34211866.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 205271166 is about 14327.2874613445. The cubic root of 205271166 is about 589.8967223229.

The spelling of 205271166 in words is "two hundred five million, two hundred seventy-one thousand, one hundred sixty-six".