63505648 has 20 divisors (see below), whose sum is σ = 125661600. Its totient is φ = 31076864.

The previous prime is 63505643. The next prime is 63505649. The reversal of 63505648 is 84650536.

It is a super-3 number, since 3×63505648³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63505643) 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 3 ways as a sum of consecutive naturals, for example, 41473 + ... + 42976.

It is an arithmetic number, because the mean of its divisors is an integer number (6283080).

Almost surely, 2^63505648 is an apocalyptic number.

It is an amenable number.

63505648 is a deficient number, since it is larger than the sum of its proper divisors (62155952).

63505648 is a wasteful number, since it uses less digits than its factorization.

63505648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84504 (or 84498 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 63505648 is about 7969.0431044135. The cubic root of 63505648 is about 398.9674368268.

The spelling of 63505648 in words is "sixty-three million, five hundred five thousand, six hundred forty-eight".