63218316 has 48 divisors (see below), whose sum is σ = 169747200. Its totient is φ = 17937600.

The previous prime is 63218303. The next prime is 63218317. The reversal of 63218316 is 61381236.

It is not an unprimeable number, because it can be changed into a prime (63218317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9991 + ... + 15041.

It is an arithmetic number, because the mean of its divisors is an integer number (3536400).

Almost surely, 2^63218316 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63218316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84873600).

63218316 is an abundant number, since it is smaller than the sum of its proper divisors (106528884).

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

63218316 is a wasteful number, since it uses less digits than its factorization.

63218316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5214 (or 5212 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 63218316 is about 7950.9946547586. The cubic root of 63218316 is about 398.3648162103.

The spelling of 63218316 in words is "sixty-three million, two hundred eighteen thousand, three hundred sixteen".