63516560 has 20 divisors (see below), whose sum is σ = 147676188. Its totient is φ = 25406592.

The previous prime is 63516533. The next prime is 63516569. The reversal of 63516560 is 6561536.

63516560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 41576704 + 21939856 = 6448^2 + 4684^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (63516569) 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 3 ways as a sum of consecutive naturals, for example, 396899 + ... + 397058.

Almost surely, 2^63516560 is an apocalyptic number.

It is an amenable number.

63516560 is an abundant number, since it is smaller than the sum of its proper divisors (84159628).

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

63516560 is a wasteful number, since it uses less digits than its factorization.

63516560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793970 (or 793964 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 63516560 is about 7969.7277243329. The cubic root of 63516560 is about 398.9902866755.

The spelling of 63516560 in words is "sixty-three million, five hundred sixteen thousand, five hundred sixty".