663782252 has 72 divisors (see below), whose sum is σ = 1417649184. Its totient is φ = 266333184.

The previous prime is 663782243. The next prime is 663782303. The reversal of 663782252 is 252287366.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 980138 + ... + 980814.

It is an arithmetic number, because the mean of its divisors is an integer number (19689572).

Almost surely, 2^663782252 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 663782252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (708824592).

663782252 is an abundant number, since it is smaller than the sum of its proper divisors (753866932).

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

663782252 is a wasteful number, since it uses less digits than its factorization.

663782252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823 (or 802 counting only the distinct ones).

The product of its digits is 241920, while the sum is 41.

The square root of 663782252 is about 25763.9719763859. The cubic root of 663782252 is about 872.3187591895.

The spelling of 663782252 in words is "six hundred sixty-three million, seven hundred eighty-two thousand, two hundred fifty-two".