64446222 has 8 divisors (see below), whose sum is σ = 128892456. Its totient is φ = 21482072.

The previous prime is 64446211. The next prime is 64446223. The reversal of 64446222 is 22264446.

It is a sphenic number, since it is the product of 3 distinct primes.

64446222 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 64446222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64446223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5370513 + ... + 5370524.

It is an arithmetic number, because the mean of its divisors is an integer number (16111557).

Almost surely, 2^64446222 is an apocalyptic number.

64446222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64446222 is a wasteful number, since it uses less digits than its factorization.

64446222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10741042.

The product of its digits is 18432, while the sum is 30.

The square root of 64446222 is about 8027.8404318970. The cubic root of 64446222 is about 400.9274769707.

The spelling of 64446222 in words is "sixty-four million, four hundred forty-six thousand, two hundred twenty-two".