663244 has 6 divisors (see below), whose sum is σ = 1160684. Its totient is φ = 331620.

The previous prime is 663241. The next prime is 663263. The reversal of 663244 is 442366.

663244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (663241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82902 + ... + 82909.

2⁶⁶³²⁴⁴ is an apocalyptic number.

It is an amenable number.

663244 is a deficient number, since it is larger than the sum of its proper divisors (497440).

663244 is a wasteful number, since it uses less digits than its factorization.

663244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165815 (or 165813 counting only the distinct ones).

The product of its digits is 3456, while the sum is 25.

The square root of 663244 is about 814.3979371290. The cubic root of 663244 is about 87.2082911624.

The spelling of 663244 in words is "six hundred sixty-three thousand, two hundred forty-four".