63985560 has 32 divisors (see below), whose sum is σ = 191957040. Its totient is φ = 17062784.

The previous prime is 63985541. The next prime is 63985561. The reversal of 63985560 is 6558936.

63985560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63985561) 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, 266487 + ... + 266726.

Almost surely, 2^63985560 is an apocalyptic number.

63985560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63985560 is an abundant number, since it is smaller than the sum of its proper divisors (127971480).

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

63985560 is a wasteful number, since it uses less digits than its factorization.

63985560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533227 (or 533223 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 63985560 is about 7999.0974490876. The cubic root of 63985560 is about 399.9699144039.

The spelling of 63985560 in words is "sixty-three million, nine hundred eighty-five thousand, five hundred sixty".