663276444 has 12 divisors (see below), whose sum is σ = 1547645064. Its totient is φ = 221092144.

The previous prime is 663276443. The next prime is 663276457. The reversal of 663276444 is 444672366.

663276444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 663276396 and 663276405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663276443) 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, 27636507 + ... + 27636530.

It is an arithmetic number, because the mean of its divisors is an integer number (128970422).

Almost surely, 2^663276444 is an apocalyptic number.

It is an amenable number.

663276444 is an abundant number, since it is smaller than the sum of its proper divisors (884368620).

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

663276444 is a wasteful number, since it uses less digits than its factorization.

663276444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55273044 (or 55273042 counting only the distinct ones).

The product of its digits is 580608, while the sum is 42.

The square root of 663276444 is about 25754.1539173781. The cubic root of 663276444 is about 872.0971313259.

It can be divided in two parts, 66327 and 6444, that added together give a triangular number (72771 = T₃₈₁).

The spelling of 663276444 in words is "six hundred sixty-three million, two hundred seventy-six thousand, four hundred forty-four".