204868 has 6 divisors (see below), whose sum is σ = 358526. Its totient is φ = 102432.

The previous prime is 204859. The next prime is 204871. The reversal of 204868 is 868402.

It can be written as a sum of positive squares in only one way, i.e., 161604 + 43264 = 402^2 + 208^2 .

It is an unprimeable number.

204868 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 (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25605 + ... + 25612.

2²⁰⁴⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

204868 is a deficient number, since it is larger than the sum of its proper divisors (153658).

204868 is a wasteful number, since it uses less digits than its factorization.

204868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51221 (or 51219 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 204868 is about 452.6234638195. The cubic root of 204868 is about 58.9510270621.

It can be divided in two parts, 2048 and 68, that added together give a square (2116 = 46²).

The spelling of 204868 in words is "two hundred four thousand, eight hundred sixty-eight".