63489960 has 64 divisors (see below), whose sum is σ = 211636800. Its totient is φ = 16930368.

The previous prime is 63489949. The next prime is 63489989. The reversal of 63489960 is 6998436.

63489960 is a `hidden beast` number, since 634 + 8 + 9 + 9 + 6 + 0 = 666.

63489960 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 15 ways as a sum of consecutive naturals, for example, 28314 + ... + 30473.

It is an arithmetic number, because the mean of its divisors is an integer number (3306825).

Almost surely, 2^63489960 is an apocalyptic number.

63489960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63489960 is an abundant number, since it is smaller than the sum of its proper divisors (148146840).

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

63489960 is a wasteful number, since it uses less digits than its factorization.

63489960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58807 (or 58797 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 63489960 is about 7968.0587347233. The cubic root of 63489960 is about 398.9345813942.

The spelling of 63489960 in words is "sixty-three million, four hundred eighty-nine thousand, nine hundred sixty".