66204 has 24 divisors (see below), whose sum is σ = 171920. Its totient is φ = 22032.

The previous prime is 66191. The next prime is 66221. The reversal of 66204 is 40266.

66204 is a `hidden beast` number, since 662 + 0 + 4 = 666.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 66204.

It is an unprimeable number.

66204 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199 + ... + 414.

2⁶⁶²⁰⁴ is an apocalyptic number.

It is an amenable number.

66204 is an abundant number, since it is smaller than the sum of its proper divisors (105716).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85960).

66204 is a wasteful number, since it uses less digits than its factorization.

66204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626 (or 618 counting only the distinct ones).

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

The square root of 66204 is about 257.3013797087. The cubic root of 66204 is about 40.4539943994.

The spelling of 66204 in words is "sixty-six thousand, two hundred four".