660086260 has 12 divisors (see below), whose sum is σ = 1386181188. Its totient is φ = 264034496.

The previous prime is 660086209. The next prime is 660086279. The reversal of 660086260 is 62680066.

It can be written as a sum of positive squares in 2 ways, for example, as 239754256 + 420332004 = 15484^2 + 20502^2 .

It is a congruent number.

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, 16502137 + ... + 16502176.

It is an arithmetic number, because the mean of its divisors is an integer number (115515099).

Almost surely, 2^660086260 is an apocalyptic number.

It is an amenable number.

660086260 is an abundant number, since it is smaller than the sum of its proper divisors (726094928).

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

660086260 is a wasteful number, since it uses less digits than its factorization.

660086260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33004322 (or 33004320 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 660086260 is about 25692.1439354523. The cubic root of 660086260 is about 870.6966982859.

The spelling of 660086260 in words is "six hundred sixty million, eighty-six thousand, two hundred sixty".