63323216 has 40 divisors (see below), whose sum is σ = 134943744. Its totient is φ = 28546560.

The previous prime is 63323213. The next prime is 63323237. The reversal of 63323216 is 61232336.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63323213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20936 + ... + 23768.

Almost surely, 2^63323216 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 63323216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67471872).

63323216 is an abundant number, since it is smaller than the sum of its proper divisors (71620528).

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

63323216 is a wasteful number, since it uses less digits than its factorization.

63323216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2979 (or 2973 counting only the distinct ones).

The product of its digits is 3888, while the sum is 26.

The square root of 63323216 is about 7957.5885794630. The cubic root of 63323216 is about 398.5850339127.

The spelling of 63323216 in words is "sixty-three million, three hundred twenty-three thousand, two hundred sixteen".