63647328 has 48 divisors (see below), whose sum is σ = 167662656. Its totient is φ = 21141120.

The previous prime is 63647327. The next prime is 63647341. The reversal of 63647328 is 82374636.

63647328 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 (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63647327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30775 + ... + 32777.

It is an arithmetic number, because the mean of its divisors is an integer number (3492972).

Almost surely, 2^63647328 is an apocalyptic number.

It is an amenable number.

63647328 is an abundant number, since it is smaller than the sum of its proper divisors (104015328).

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

63647328 is a wasteful number, since it uses less digits than its factorization.

63647328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2347 (or 2339 counting only the distinct ones).

The product of its digits is 145152, while the sum is 39.

The square root of 63647328 is about 7977.9275504356. The cubic root of 63647328 is about 399.2639129372.

The spelling of 63647328 in words is "sixty-three million, six hundred forty-seven thousand, three hundred twenty-eight".