663303222 has 16 divisors (see below), whose sum is σ = 1474007280. Its totient is φ = 221101056.

The previous prime is 663303209. The next prime is 663303227. The reversal of 663303222 is 222303366.

663303222 is a `hidden beast` number, since 6 + 6 + 330 + 322 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663303227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6141643 + ... + 6141750.

It is an arithmetic number, because the mean of its divisors is an integer number (92125455).

Almost surely, 2^663303222 is an apocalyptic number.

663303222 is an abundant number, since it is smaller than the sum of its proper divisors (810704058).

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

663303222 is a wasteful number, since it uses less digits than its factorization.

663303222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12283404 (or 12283398 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

The square root of 663303222 is about 25754.6737894309. The cubic root of 663303222 is about 872.1088673590.

Adding to 663303222 its reverse (222303366), we get a palindrome (885606588).

The spelling of 663303222 in words is "six hundred sixty-three million, three hundred three thousand, two hundred twenty-two".