663485256 has 96 divisors (see below), whose sum is σ = 2129749440. Its totient is φ = 189563328.

The previous prime is 663485239. The next prime is 663485257. The reversal of 663485256 is 652584366.

663485256 is a `hidden beast` number, since 6 + 634 + 8 + 5 + 2 + 5 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (663485257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10771 + ... + 37986.

It is an arithmetic number, because the mean of its divisors is an integer number (22184890).

Almost surely, 2^663485256 is an apocalyptic number.

It is an amenable number.

663485256 is an abundant number, since it is smaller than the sum of its proper divisors (1466264184).

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

663485256 is a wasteful number, since it uses less digits than its factorization.

663485256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48785 (or 48769 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 45.

The square root of 663485256 is about 25758.2075463337. The cubic root of 663485256 is about 872.1886392943.

The spelling of 663485256 in words is "six hundred sixty-three million, four hundred eighty-five thousand, two hundred fifty-six".