663444242 has 8 divisors (see below), whose sum is σ = 1047543600. Its totient is φ = 314263044.

The previous prime is 663444241. The next prime is 663444259. The reversal of 663444242 is 242444366.

663444242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (663444241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8729492 + ... + 8729567.

It is an arithmetic number, because the mean of its divisors is an integer number (130942950).

Almost surely, 2^663444242 is an apocalyptic number.

663444242 is a deficient number, since it is larger than the sum of its proper divisors (384099358).

663444242 is a wasteful number, since it uses less digits than its factorization.

663444242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17459080.

The product of its digits is 110592, while the sum is 35.

The square root of 663444242 is about 25757.4113994400. The cubic root of 663444242 is about 872.1706671884.

The spelling of 663444242 in words is "six hundred sixty-three million, four hundred forty-four thousand, two hundred forty-two".