664366244 has 12 divisors (see below), whose sum is σ = 1187378304. Its totient is φ = 325115304.

The previous prime is 664366231. The next prime is 664366253. The reversal of 664366244 is 442663466.

664366244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1766744 + ... + 1767119.

It is an arithmetic number, because the mean of its divisors is an integer number (98948192).

Almost surely, 2^664366244 is an apocalyptic number.

It is an amenable number.

664366244 is a deficient number, since it is larger than the sum of its proper divisors (523012060).

664366244 is a wasteful number, since it uses less digits than its factorization.

664366244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3533914 (or 3533912 counting only the distinct ones).

The product of its digits is 497664, while the sum is 41.

The square root of 664366244 is about 25775.3029856101. The cubic root of 664366244 is about 872.5745046297.

The spelling of 664366244 in words is "six hundred sixty-four million, three hundred sixty-six thousand, two hundred forty-four".