663280704000 has 1280 divisors, whose sum is σ = 2640938826240. Its totient is φ = 163499212800.

The previous prime is 663280703963. The next prime is 663280704049. The reversal of 663280704000 is 407082366.

It is a tau number, because it is divible by the number of its divisors (1280).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1968191832 + ... + 1968192168.

It is an arithmetic number, because the mean of its divisors is an integer number (2063233458).

Almost surely, 2^663280704000 is an apocalyptic number.

663280704000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663280704000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1320469413120).

663280704000 is an abundant number, since it is smaller than the sum of its proper divisors (1977658122240).

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

663280704000 is a wasteful number, since it uses less digits than its factorization.

663280704000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

Adding to 663280704000 its reverse (407082366), we get a palindrome (663687786366).

The spelling of 663280704000 in words is "six hundred sixty-three billion, two hundred eighty million, seven hundred four thousand".