663744318 has 8 divisors (see below), whose sum is σ = 1327488648. Its totient is φ = 221248104.

The previous prime is 663744253. The next prime is 663744331. The reversal of 663744318 is 813447366.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

663744318 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 663744318.

It is a congruent number.

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, 55312021 + ... + 55312032.

It is an arithmetic number, because the mean of its divisors is an integer number (165936081).

Almost surely, 2^663744318 is an apocalyptic number.

663744318 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

663744318 is a wasteful number, since it uses less digits than its factorization.

663744318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110624058.

The product of its digits is 290304, while the sum is 42.

The square root of 663744318 is about 25763.2357827972. The cubic root of 663744318 is about 872.3021417068.

The spelling of 663744318 in words is "six hundred sixty-three million, seven hundred forty-four thousand, three hundred eighteen".