660680304 has 40 divisors (see below), whose sum is σ = 1718230800. Its totient is φ = 218746368.

The previous prime is 660680287. The next prime is 660680309. The reversal of 660680304 is 403086066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660680309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39037 + ... + 53340.

It is an arithmetic number, because the mean of its divisors is an integer number (42955770).

Almost surely, 2^660680304 is an apocalyptic number.

It is an amenable number.

660680304 is an abundant number, since it is smaller than the sum of its proper divisors (1057550496).

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

660680304 is a wasteful number, since it uses less digits than its factorization.

660680304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92537 (or 92531 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 660680304 is about 25703.7021457999. The cubic root of 660680304 is about 870.9578141923.

The spelling of 660680304 in words is "six hundred sixty million, six hundred eighty thousand, three hundred four".