664204804 has 12 divisors (see below), whose sum is σ = 1163153628. Its totient is φ = 331875200.

The previous prime is 664204781. The next prime is 664204811. The reversal of 664204804 is 408402466.

It is a happy number.

664204804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 131056704 + 533148100 = 11448^2 + 23090^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 664204804.

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, 50137 + ... + 61984.

It is an arithmetic number, because the mean of its divisors is an integer number (96929469).

Almost surely, 2^664204804 is an apocalyptic number.

It is an amenable number.

664204804 is a deficient number, since it is larger than the sum of its proper divisors (498948824).

664204804 is a wasteful number, since it uses less digits than its factorization.

664204804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113606 (or 113604 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 664204804 is about 25772.1711153717. The cubic root of 664204804 is about 872.5038208058.

The spelling of 664204804 in words is "six hundred sixty-four million, two hundred four thousand, eight hundred four".