663564212 has 12 divisors (see below), whose sum is σ = 1163568000. Its totient is φ = 331116216.

The previous prime is 663564211. The next prime is 663564221. The reversal of 663564212 is 212465366.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663564211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164228 + ... + 168219.

It is an arithmetic number, because the mean of its divisors is an integer number (96964000).

Almost surely, 2^663564212 is an apocalyptic number.

It is an amenable number.

663564212 is a deficient number, since it is larger than the sum of its proper divisors (500003788).

663564212 is a wasteful number, since it uses less digits than its factorization.

663564212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332950 (or 332948 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

The square root of 663564212 is about 25759.7401384408. The cubic root of 663564212 is about 872.2232352878.

The spelling of 663564212 in words is "six hundred sixty-three million, five hundred sixty-four thousand, two hundred twelve".