204966 has 24 divisors (see below), whose sum is σ = 453960. Its totient is φ = 66816.

The previous prime is 204947. The next prime is 204973. The reversal of 204966 is 669402.

It is a super-2 number, since 2×204966² = 84022122312, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 966 + ... + 1158.

It is an arithmetic number, because the mean of its divisors is an integer number (18915).

2²⁰⁴⁹⁶⁶ is an apocalyptic number.

204966 is an abundant number, since it is smaller than the sum of its proper divisors (248994).

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

204966 is a wasteful number, since it uses less digits than its factorization.

204966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 204966 is about 452.7317086311. The cubic root of 204966 is about 58.9604254385.

It can be divided in two parts, 20496 and 6, that added together give a palindrome (20502).

The spelling of 204966 in words is "two hundred four thousand, nine hundred sixty-six".