663714944 has 32 divisors (see below), whose sum is σ = 1323875340. Its totient is φ = 331448320.

The previous prime is 663714937. The next prime is 663714971. The reversal of 663714944 is 449417366.

663714944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 659873344 + 3841600 = 25688^2 + 1960^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 663714895 and 663714904.

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, 119264 + ... + 124704.

Almost surely, 2^663714944 is an apocalyptic number.

663714944 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

663714944 is a deficient number, since it is larger than the sum of its proper divisors (660160396).

663714944 is an equidigital number, since it uses as much as digits as its factorization.

663714944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6408 (or 6396 counting only the distinct ones).

The product of its digits is 435456, while the sum is 44.

The square root of 663714944 is about 25762.6657005831. The cubic root of 663714944 is about 872.2892736087.

The spelling of 663714944 in words is "six hundred sixty-three million, seven hundred fourteen thousand, nine hundred forty-four".