63744444 has 18 divisors (see below), whose sum is σ = 161131880. Its totient is φ = 21248136.

The previous prime is 63744437. The next prime is 63744467. The reversal of 63744444 is 44444736.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1770679 = 63744444 / (6 + 3 + 7 + 4 + 4 + 4 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 63744399 and 63744408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 885304 + ... + 885375.

Almost surely, 2^63744444 is an apocalyptic number.

It is an amenable number.

63744444 is an abundant number, since it is smaller than the sum of its proper divisors (97387436).

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

63744444 is a wasteful number, since it uses less digits than its factorization.

63744444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770689 (or 1770684 counting only the distinct ones).

The product of its digits is 129024, while the sum is 36.

The square root of 63744444 is about 7984.0117735384. The cubic root of 63744444 is about 399.4668814438.

The spelling of 63744444 in words is "sixty-three million, seven hundred forty-four thousand, four hundred forty-four".