64066220 has 24 divisors (see below), whose sum is σ = 139179600. Its totient is φ = 24742592.

The previous prime is 64066213. The next prime is 64066229. The reversal of 64066220 is 2266046.

64066220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 64066220.

It is not an unprimeable number, because it can be changed into a prime (64066229) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 54650 + ... + 55809.

It is an arithmetic number, because the mean of its divisors is an integer number (5799150).

Almost surely, 2^64066220 is an apocalyptic number.

It is an amenable number.

64066220 is an abundant number, since it is smaller than the sum of its proper divisors (75113380).

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

64066220 is a wasteful number, since it uses less digits than its factorization.

64066220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110497 (or 110495 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 64066220 is about 8004.1376799753. The cubic root of 64066220 is about 400.1379107794.

The spelling of 64066220 in words is "sixty-four million, sixty-six thousand, two hundred twenty".