63984220 has 24 divisors (see below), whose sum is σ = 134535744. Its totient is φ = 25561536.

The previous prime is 63984157. The next prime is 63984227. The reversal of 63984220 is 2248936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63984227) 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, 20397 + ... + 23323.

It is an arithmetic number, because the mean of its divisors is an integer number (5605656).

Almost surely, 2^63984220 is an apocalyptic number.

It is an amenable number.

63984220 is an abundant number, since it is smaller than the sum of its proper divisors (70551524).

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

63984220 is a wasteful number, since it uses less digits than its factorization.

63984220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4029 (or 4027 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 63984220 is about 7999.0136891994. The cubic root of 63984220 is about 399.9671222977.

The spelling of 63984220 in words is "sixty-three million, nine hundred eighty-four thousand, two hundred twenty".