6660060660 has 72 divisors (see below), whose sum is σ = 22038752736. Its totient is φ = 1614559680.

The previous prime is 6660060647. The next prime is 6660060661. The reversal of 6660060660 is 660600666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660060661) 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 23 ways as a sum of consecutive naturals, for example, 1679854 + ... + 1683813.

It is an arithmetic number, because the mean of its divisors is an integer number (306093788).

Almost surely, 2^6660060660 is an apocalyptic number.

6660060660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6660060660 is an abundant number, since it is smaller than the sum of its proper divisors (15378692076).

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

6660060660 is a wasteful number, since it uses less digits than its factorization.

6660060660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3363693 (or 3363688 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 6660060660 is about 81609.1947025579. The cubic root of 6660060660 is about 1881.4502032900.

It can be divided in two parts, 66600606 and 60, that added together give a palindrome (66600666).

The spelling of 6660060660 in words is "six billion, six hundred sixty million, sixty thousand, six hundred sixty".