63988560 has 60 divisors (see below), whose sum is σ = 214897332. Its totient is φ = 17063424.

The previous prime is 63988541. The next prime is 63988567. The reversal of 63988560 is 6588936.

63988560 is a `hidden beast` number, since 6 + 3 + 9 + 88 + 560 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 35856144 + 28132416 = 5988^2 + 5304^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63988567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43717 + ... + 45156.

Almost surely, 2^63988560 is an apocalyptic number.

63988560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63988560 is an abundant number, since it is smaller than the sum of its proper divisors (150908772).

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

63988560 is a wasteful number, since it uses less digits than its factorization.

63988560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88892 (or 88883 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 63988560 is about 7999.2849680456. The cubic root of 63988560 is about 399.9761652465.

The spelling of 63988560 in words is "sixty-three million, nine hundred eighty-eight thousand, five hundred sixty".