663268 has 6 divisors (see below), whose sum is σ = 1160726. Its totient is φ = 331632.

The previous prime is 663263. The next prime is 663269. The reversal of 663268 is 862366.

663268 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 652864 + 10404 = 808^2 + 102^2 .

It is not an unprimeable number, because it can be changed into a prime (663263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82905 + ... + 82912.

2⁶⁶³²⁶⁸ is an apocalyptic number.

It is an amenable number.

663268 is a deficient number, since it is larger than the sum of its proper divisors (497458).

663268 is a wasteful number, since it uses less digits than its factorization.

663268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165821 (or 165819 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 663268 is about 814.4126718071. The cubic root of 663268 is about 87.2093430496.

The spelling of 663268 in words is "six hundred sixty-three thousand, two hundred sixty-eight".