660321316 has 6 divisors (see below), whose sum is σ = 1155562310. Its totient is φ = 330160656.

The previous prime is 660321253. The next prime is 660321341. The reversal of 660321316 is 613123066.

660321316 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 only one way, i.e., 571018816 + 89302500 = 23896^2 + 9450^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82540161 + ... + 82540168.

Almost surely, 2^660321316 is an apocalyptic number.

It is an amenable number.

660321316 is a deficient number, since it is larger than the sum of its proper divisors (495240994).

660321316 is a wasteful number, since it uses less digits than its factorization.

660321316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165080333 (or 165080331 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 660321316 is about 25696.7180005541. The cubic root of 660321316 is about 870.8000374033.

The spelling of 660321316 in words is "six hundred sixty million, three hundred twenty-one thousand, three hundred sixteen".