63221244 has 12 divisors (see below), whose sum is σ = 147516264. Its totient is φ = 21073744.

The previous prime is 63221243. The next prime is 63221269. The reversal of 63221244 is 44212236.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63221243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2634207 + ... + 2634230.

It is an arithmetic number, because the mean of its divisors is an integer number (12293022).

Almost surely, 2^63221244 is an apocalyptic number.

It is an amenable number.

63221244 is an abundant number, since it is smaller than the sum of its proper divisors (84295020).

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

63221244 is a wasteful number, since it uses less digits than its factorization.

63221244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5268444 (or 5268442 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

The square root of 63221244 is about 7951.1787805331. The cubic root of 63221244 is about 398.3709662960.

The spelling of 63221244 in words is "sixty-three million, two hundred twenty-one thousand, two hundred forty-four".