663343984 has 10 divisors (see below), whose sum is σ = 1285229000. Its totient is φ = 331671984.

The previous prime is 663343969. The next prime is 663343991. The reversal of 663343984 is 489343366.

663343984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×663343984² = 880050482217984512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20729484 + ... + 20729515.

It is an arithmetic number, because the mean of its divisors is an integer number (128522900).

Almost surely, 2^663343984 is an apocalyptic number.

It is an amenable number.

663343984 is a deficient number, since it is larger than the sum of its proper divisors (621885016).

663343984 is a wasteful number, since it uses less digits than its factorization.

663343984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41459007 (or 41459001 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 46.

The square root of 663343984 is about 25755.4651287838. The cubic root of 663343984 is about 872.1267315736.

The spelling of 663343984 in words is "six hundred sixty-three million, three hundred forty-three thousand, nine hundred eighty-four".