204166205 has 4 divisors (see below), whose sum is σ = 244999452. Its totient is φ = 163332960.

The previous prime is 204166199. The next prime is 204166211. The reversal of 204166205 is 502661402.

204166205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 502661402 = 2 ⋅251330701.

It is an interprime number because it is at equal distance from previous prime (204166199) and next prime (204166211).

It can be written as a sum of positive squares in 2 ways, for example, as 25836889 + 178329316 = 5083^2 + 13354^2 .

It is not a de Polignac number, because 204166205 - 2¹² = 204162109 is a prime.

It is a Duffinian 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, 20416616 + ... + 20416625.

It is an arithmetic number, because the mean of its divisors is an integer number (61249863).

Almost surely, 2^204166205 is an apocalyptic number.

It is an amenable number.

204166205 is a deficient number, since it is larger than the sum of its proper divisors (40833247).

204166205 is an equidigital number, since it uses as much as digits as its factorization.

204166205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40833246.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 204166205 is about 14288.6740112580. The cubic root of 204166205 is about 588.8363591779.

The spelling of 204166205 in words is "two hundred four million, one hundred sixty-six thousand, two hundred five".