660560296208 has 20 divisors (see below), whose sum is σ = 1282636103580. Its totient is φ = 329557430784.

The previous prime is 660560296117. The next prime is 660560296211. The reversal of 660560296208 is 802692065066.

It can be written as a sum of positive squares in 2 ways, for example, as 597022019584 + 63538276624 = 772672^2 + 252068^2 .

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, 45162293 + ... + 45176916.

It is an arithmetic number, because the mean of its divisors is an integer number (64131805179).

Almost surely, 2^660560296208 is an apocalyptic number.

It is an amenable number.

660560296208 is a deficient number, since it is larger than the sum of its proper divisors (622075807372).

660560296208 is a wasteful number, since it uses less digits than its factorization.

660560296208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90339674 (or 90339668 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 50.

The spelling of 660560296208 in words is "six hundred sixty billion, five hundred sixty million, two hundred ninety-six thousand, two hundred eight".