63320544 has 144 divisors (see below), whose sum is σ = 210319200. Its totient is φ = 18063360.

The previous prime is 63320539. The next prime is 63320611. The reversal of 63320544 is 44502336.

63320544 is a `hidden beast` number, since 633 + 20 + 5 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98464 + ... + 99104.

It is an arithmetic number, because the mean of its divisors is an integer number (1460550).

Almost surely, 2^63320544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63320544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105159600).

63320544 is an abundant number, since it is smaller than the sum of its proper divisors (146998656).

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

63320544 is a wasteful number, since it uses less digits than its factorization.

63320544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 63320544 is about 7957.4206876349. The cubic root of 63320544 is about 398.5794275740.

The spelling of 63320544 in words is "sixty-three million, three hundred twenty thousand, five hundred forty-four".