6591000660 has 48 divisors (see below), whose sum is σ = 18485712000. Its totient is φ = 1754656384.

The previous prime is 6591000641. The next prime is 6591000677. The reversal of 6591000660 is 660001956.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55755 + ... + 127634.

It is an arithmetic number, because the mean of its divisors is an integer number (385119000).

Almost surely, 2^6591000660 is an apocalyptic number.

6591000660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6591000660 is an abundant number, since it is smaller than the sum of its proper divisors (11894711340).

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

6591000660 is a wasteful number, since it uses less digits than its factorization.

6591000660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184000 (or 183998 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 6591000660 is about 81184.9780439707. The cubic root of 6591000660 is about 1874.9245039825.

The spelling of 6591000660 in words is "six billion, five hundred ninety-one million, six hundred sixty", and thus it is an aban number.