63481144 has 8 divisors (see below), whose sum is σ = 119027160. Its totient is φ = 31740568.

The previous prime is 63481141. The next prime is 63481181. The reversal of 63481144 is 44118436.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63481141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3967564 + ... + 3967579.

It is an arithmetic number, because the mean of its divisors is an integer number (14878395).

Almost surely, 2^63481144 is an apocalyptic number.

It is an amenable number.

63481144 is a deficient number, since it is larger than the sum of its proper divisors (55546016).

63481144 is a wasteful number, since it uses less digits than its factorization.

63481144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7935149 (or 7935145 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 63481144 is about 7967.5055067443. The cubic root of 63481144 is about 398.9161156396.

It can be divided in two parts, 634 and 81144, that multiplied together give a triangular number (51445296 = T₁₀₁₄₃).

The spelling of 63481144 in words is "sixty-three million, four hundred eighty-one thousand, one hundred forty-four".