663213472 has 24 divisors (see below), whose sum is σ = 1327110372. Its totient is φ = 326169600.

The previous prime is 663213461. The next prime is 663213527. The reversal of 663213472 is 274312366.

663213472 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 2 ways, for example, as 633226896 + 29986576 = 25164^2 + 5476^2 .

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, 167929 + ... + 171832.

Almost surely, 2^663213472 is an apocalyptic number.

It is an amenable number.

663213472 is an abundant number, since it is smaller than the sum of its proper divisors (663896900).

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

663213472 is a wasteful number, since it uses less digits than its factorization.

663213472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339832 (or 339824 counting only the distinct ones).

The product of its digits is 36288, while the sum is 34.

The square root of 663213472 is about 25752.9313282974. The cubic root of 663213472 is about 872.0695312510.

The spelling of 663213472 in words is "six hundred sixty-three million, two hundred thirteen thousand, four hundred seventy-two".