6660620260 has 24 divisors (see below), whose sum is σ = 15985488960. Its totient is φ = 2283641184.

The previous prime is 6660620233. The next prime is 6660620261. The reversal of 6660620260 is 620260666.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6660620261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23787790 + ... + 23788069.

It is an arithmetic number, because the mean of its divisors is an integer number (666062040).

Almost surely, 2^6660620260 is an apocalyptic number.

It is an amenable number.

6660620260 is an abundant number, since it is smaller than the sum of its proper divisors (9324868700).

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

6660620260 is a wasteful number, since it uses less digits than its factorization.

6660620260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47575875 (or 47575873 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 6660620260 is about 81612.6231657824. The cubic root of 6660620260 is about 1881.5028970066.

The spelling of 6660620260 in words is "six billion, six hundred sixty million, six hundred twenty thousand, two hundred sixty".