663285 has 16 divisors (see below), whose sum is σ = 1213056. Its totient is φ = 303168.

The previous prime is 663283. The next prime is 663301. The reversal of 663285 is 582366.

It is not a de Polignac number, because 663285 - 2¹ = 663283 is a prime.

It is a zygodrome in base 6.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3054 + ... + 3263.

It is an arithmetic number, because the mean of its divisors is an integer number (75816).

2⁶⁶³²⁸⁵ is an apocalyptic number.

It is an amenable number.

663285 is a deficient number, since it is larger than the sum of its proper divisors (549771).

663285 is a wasteful number, since it uses less digits than its factorization.

663285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6332.

The product of its digits is 8640, while the sum is 30.

The square root of 663285 is about 814.4231087095. The cubic root of 663285 is about 87.2100881211.

The spelling of 663285 in words is "six hundred sixty-three thousand, two hundred eighty-five".