663204 has 24 divisors (see below), whose sum is σ = 1639008. Its totient is φ = 208000.

The previous prime is 663203. The next prime is 663209. The reversal of 663204 is 402366.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (663203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1422 + ... + 1829.

It is an arithmetic number, because the mean of its divisors is an integer number (68292).

2⁶⁶³²⁰⁴ is an apocalyptic number.

It is an amenable number.

663204 is an abundant number, since it is smaller than the sum of its proper divisors (975804).

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

663204 is a wasteful number, since it uses less digits than its factorization.

663204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3275 (or 3273 counting only the distinct ones).

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

The square root of 663204 is about 814.3733787398. The cubic root of 663204 is about 87.2065379605.

The spelling of 663204 in words is "six hundred sixty-three thousand, two hundred four".