663213760 has 224 divisors, whose sum is σ = 1826971200. Its totient is φ = 227082240.

The previous prime is 663213743. The next prime is 663213779. The reversal of 663213760 is 67312366.

663213760 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7451796 + ... + 7451884.

Almost surely, 2^663213760 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663213760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (913485600).

663213760 is an abundant number, since it is smaller than the sum of its proper divisors (1163757440).

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

663213760 is a wasteful number, since it uses less digits than its factorization.

663213760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 663213760 is about 25752.9369198932. The cubic root of 663213760 is about 872.0696574829.

The spelling of 663213760 in words is "six hundred sixty-three million, two hundred thirteen thousand, seven hundred sixty".