663256 has 16 divisors (see below), whose sum is σ = 1356840. Its totient is φ = 301440.

The previous prime is 663241. The next prime is 663263. The reversal of 663256 is 652366.

663256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3681 + ... + 3856.

2⁶⁶³²⁵⁶ is an apocalyptic number.

It is an amenable number.

663256 is an abundant number, since it is smaller than the sum of its proper divisors (693584).

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

663256 is a wasteful number, since it uses less digits than its factorization.

663256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7554 (or 7550 counting only the distinct ones).

The product of its digits is 6480, while the sum is 28.

The square root of 663256 is about 814.4053045014. The cubic root of 663256 is about 87.2088171092.

It can be divided in two parts, 663 and 256, that added together give a palindrome (919).

The spelling of 663256 in words is "six hundred sixty-three thousand, two hundred fifty-six".