663268516 has 27 divisors (see below), whose sum is σ = 1182855051. Its totient is φ = 325427544.

The previous prime is 663268513. The next prime is 663268517. The reversal of 663268516 is 615862366.

The square root of 663268516 is 25754.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663268513) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 4069051 + ... + 4069213.

Almost surely, 2^663268516 is an apocalyptic number.

663268516 is the 25754-th square number.

It is an amenable number.

663268516 is a deficient number, since it is larger than the sum of its proper divisors (519586535).

663268516 is an equidigital number, since it uses as much as digits as its factorization.

663268516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 244 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The cubic root of 663268516 is about 872.0936566493.

The spelling of 663268516 in words is "six hundred sixty-three million, two hundred sixty-eight thousand, five hundred sixteen".