204663 has 8 divisors (see below), whose sum is σ = 289008. Its totient is φ = 128384.

The previous prime is 204641. The next prime is 204667. The reversal of 204663 is 366402.

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

It is not a de Polignac number, because 204663 - 2⁶ = 204599 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 0 + 6² + 4⁸ + 6⁵ + 3⁵ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1956 + ... + 2057.

It is an arithmetic number, because the mean of its divisors is an integer number (36126).

2²⁰⁴⁶⁶³ is an apocalyptic number.

204663 is a deficient number, since it is larger than the sum of its proper divisors (84345).

204663 is a wasteful number, since it uses less digits than its factorization.

204663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4033.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 204663 is about 452.3969495918. The cubic root of 204663 is about 58.9313574965.

The spelling of 204663 in words is "two hundred four thousand, six hundred sixty-three".