63287720 has 32 divisors (see below), whose sum is σ = 148590720. Its totient is φ = 24214080.

The previous prime is 63287717. The next prime is 63287729. The reversal of 63287720 is 2778236.

63287720 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 (63287729) 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 7 ways as a sum of consecutive naturals, for example, 33476 + ... + 35315.

It is an arithmetic number, because the mean of its divisors is an integer number (4643460).

Almost surely, 2^63287720 is an apocalyptic number.

It is an amenable number.

63287720 is an abundant number, since it is smaller than the sum of its proper divisors (85303000).

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

63287720 is a wasteful number, since it uses less digits than its factorization.

63287720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68825 (or 68821 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 63287720 is about 7955.3579429212. The cubic root of 63287720 is about 398.5105440196.

The spelling of 63287720 in words is "sixty-three million, two hundred eighty-seven thousand, seven hundred twenty".