63680904 has 160 divisors (see below), whose sum is σ = 207345600. Its totient is φ = 17884800.

The previous prime is 63680879. The next prime is 63680921. The reversal of 63680904 is 40908636.

63680904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 458067 + ... + 458205.

It is an arithmetic number, because the mean of its divisors is an integer number (1295910).

Almost surely, 2^63680904 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 63680904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103672800).

63680904 is an abundant number, since it is smaller than the sum of its proper divisors (143664696).

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

63680904 is a wasteful number, since it uses less digits than its factorization.

63680904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 63680904 is about 7980.0315788849. The cubic root of 63680904 is about 399.3341087539.

The spelling of 63680904 in words is "sixty-three million, six hundred eighty thousand, nine hundred four".