663056 has 20 divisors (see below), whose sum is σ = 1329900. Its totient is φ = 319872.

The previous prime is 663053. The next prime is 663071. The reversal of 663056 is 650366.

It can be written as a sum of positive squares in 2 ways, for example, as 173056 + 490000 = 416^2 + 700^2 .

It is not an unprimeable number, because it can be changed into a prime (663053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251 + ... + 1178.

It is an arithmetic number, because the mean of its divisors is an integer number (66495).

2⁶⁶³⁰⁵⁶ is an apocalyptic number.

It is an amenable number.

663056 is an abundant number, since it is smaller than the sum of its proper divisors (666844).

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

663056 is a wasteful number, since it uses less digits than its factorization.

663056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466 (or 1460 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 663056 is about 814.2825062593. The cubic root of 663056 is about 87.2000505008.

The spelling of 663056 in words is "six hundred sixty-three thousand, fifty-six".