63378840 has 128 divisors (see below), whose sum is σ = 218972160. Its totient is φ = 14375424.

The previous prime is 63378829. The next prime is 63378863. The reversal of 63378840 is 4887336.

63378840 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 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 31 ways as a sum of consecutive naturals, for example, 165289 + ... + 165671.

It is an arithmetic number, because the mean of its divisors is an integer number (1710720).

Almost surely, 2^63378840 is an apocalyptic number.

63378840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63378840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109486080).

63378840 is an abundant number, since it is smaller than the sum of its proper divisors (155593320).

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

63378840 is a wasteful number, since it uses less digits than its factorization.

63378840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 63378840 is about 7961.0828409206. The cubic root of 63378840 is about 398.7017073160.

The spelling of 63378840 in words is "sixty-three million, three hundred seventy-eight thousand, eight hundred forty".