664223060 has 12 divisors (see below), whose sum is σ = 1394868468. Its totient is φ = 265689216.

The previous prime is 664223011. The next prime is 664223093. The reversal of 664223060 is 60322466.

It can be written as a sum of positive squares in 2 ways, for example, as 355096336 + 309126724 = 18844^2 + 17582^2 .

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 3 ways as a sum of consecutive naturals, for example, 16605557 + ... + 16605596.

It is an arithmetic number, because the mean of its divisors is an integer number (116239039).

Almost surely, 2^664223060 is an apocalyptic number.

It is an amenable number.

664223060 is an abundant number, since it is smaller than the sum of its proper divisors (730645408).

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

664223060 is a wasteful number, since it uses less digits than its factorization.

664223060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33211162 (or 33211160 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 664223060 is about 25772.5252934205. The cubic root of 664223060 is about 872.5118144666.

The spelling of 664223060 in words is "six hundred sixty-four million, two hundred twenty-three thousand, sixty".