660587260 has 12 divisors (see below), whose sum is σ = 1387233288. Its totient is φ = 264234896.

The previous prime is 660587251. The next prime is 660587261. The reversal of 660587260 is 62785066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660587261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16514662 + ... + 16514701.

It is an arithmetic number, because the mean of its divisors is an integer number (115602774).

Almost surely, 2^660587260 is an apocalyptic number.

It is an amenable number.

660587260 is an abundant number, since it is smaller than the sum of its proper divisors (726646028).

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

660587260 is a wasteful number, since it uses less digits than its factorization.

660587260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33029372 (or 33029370 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 660587260 is about 25701.8921482447. The cubic root of 660587260 is about 870.9169264372.

The spelling of 660587260 in words is "six hundred sixty million, five hundred eighty-seven thousand, two hundred sixty".