660520314 has 12 divisors (see below), whose sum is σ = 1431127386. Its totient is φ = 220173432.

The previous prime is 660520297. The next prime is 660520349. The reversal of 660520314 is 413025066.

660520314 is a `hidden beast` number, since 6 + 605 + 20 + 31 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 414814689 + 245705625 = 20367^2 + 15675^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18347769 + ... + 18347804.

Almost surely, 2^660520314 is an apocalyptic number.

660520314 is an abundant number, since it is smaller than the sum of its proper divisors (770607072).

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

660520314 is a wasteful number, since it uses less digits than its factorization.

660520314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36695581 (or 36695578 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 660520314 is about 25700.5897597701. The cubic root of 660520314 is about 870.8875049523.

The spelling of 660520314 in words is "six hundred sixty million, five hundred twenty thousand, three hundred fourteen".