663284 has 12 divisors (see below), whose sum is σ = 1176000. Its totient is φ = 327288.

The previous prime is 663283. The next prime is 663301. The reversal of 663284 is 482366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 734 + ... + 1365.

It is an arithmetic number, because the mean of its divisors is an integer number (98000).

2⁶⁶³²⁸⁴ is an apocalyptic number.

It is an amenable number.

663284 is a deficient number, since it is larger than the sum of its proper divisors (512716).

663284 is a wasteful number, since it uses less digits than its factorization.

663284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2182 (or 2180 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 663284 is about 814.4224947777. The cubic root of 663284 is about 87.2100442937.

The spelling of 663284 in words is "six hundred sixty-three thousand, two hundred eighty-four".