63280778 has 32 divisors (see below), whose sum is σ = 106900992. Its totient is φ = 27846000.

The previous prime is 63280771. The next prime is 63280787. The reversal of 63280778 is 87708236.

63280778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (63280771) 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 15 ways as a sum of consecutive naturals, for example, 142625 + ... + 143067.

It is an arithmetic number, because the mean of its divisors is an integer number (3340656).

Almost surely, 2^63280778 is an apocalyptic number.

63280778 is a deficient number, since it is larger than the sum of its proper divisors (43620214).

63280778 is a wasteful number, since it uses less digits than its factorization.

63280778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 63280778 is about 7954.9216212355. The cubic root of 63280778 is about 398.4959726759.

The spelling of 63280778 in words is "sixty-three million, two hundred eighty thousand, seven hundred seventy-eight".