63485720 has 32 divisors (see below), whose sum is σ = 145886400. Its totient is φ = 24853248.

The previous prime is 63485713. The next prime is 63485731. The reversal of 63485720 is 2758436.

It is a happy number.

63485720 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 7 ways as a sum of consecutive naturals, for example, 15005 + ... + 18764.

It is an arithmetic number, because the mean of its divisors is an integer number (4558950).

Almost surely, 2^63485720 is an apocalyptic number.

It is an amenable number.

63485720 is an abundant number, since it is smaller than the sum of its proper divisors (82400680).

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

63485720 is a wasteful number, since it uses less digits than its factorization.

63485720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33827 (or 33823 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 63485720 is about 7967.7926679853. The cubic root of 63485720 is about 398.9257006185.

The spelling of 63485720 in words is "sixty-three million, four hundred eighty-five thousand, seven hundred twenty".