204606 has 24 divisors (see below), whose sum is σ = 460824. Its totient is φ = 68040.

The previous prime is 204601. The next prime is 204613. The reversal of 204606 is 606402.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 276 + ... + 696.

It is an arithmetic number, because the mean of its divisors is an integer number (19201).

2²⁰⁴⁶⁰⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230412).

204606 is an abundant number, since it is smaller than the sum of its proper divisors (256218).

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

204606 is an equidigital number, since it uses as much as digits as its factorization.

204606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 204606 is about 452.3339474326. Note that the first 3 decimals coincide. The cubic root of 204606 is about 58.9258860642.

It can be divided in two parts, 20460 and 6, that multiplied together give a triangular number (122760 = T₄₉₅).

The spelling of 204606 in words is "two hundred four thousand, six hundred six".