664424222 has 48 divisors (see below), whose sum is σ = 1268628480. Its totient is φ = 258073200.

The previous prime is 664424197. The next prime is 664424239. The reversal of 664424222 is 222424466.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 450947 + ... + 452417.

It is an arithmetic number, because the mean of its divisors is an integer number (26429760).

Almost surely, 2^664424222 is an apocalyptic number.

664424222 is a deficient number, since it is larger than the sum of its proper divisors (604204258).

664424222 is a wasteful number, since it uses less digits than its factorization.

664424222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917 (or 1910 counting only the distinct ones).

The product of its digits is 36864, while the sum is 32.

The square root of 664424222 is about 25776.4276423247. The cubic root of 664424222 is about 872.5998865399.

Adding to 664424222 its reverse (222424466), we get a palindrome (886848688).

The spelling of 664424222 in words is "six hundred sixty-four million, four hundred twenty-four thousand, two hundred twenty-two".