6648660220 has 48 divisors (see below), whose sum is σ = 14961669408. Its totient is φ = 2472857600.

The previous prime is 6648660199. The next prime is 6648660223. The reversal of 6648660220 is 220668466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6648660223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89581 + ... + 146020.

It is an arithmetic number, because the mean of its divisors is an integer number (311701446).

Almost surely, 2^6648660220 is an apocalyptic number.

It is an amenable number.

6648660220 is an abundant number, since it is smaller than the sum of its proper divisors (8313009188).

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

6648660220 is a wasteful number, since it uses less digits than its factorization.

6648660220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235710 (or 235708 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 6648660220 is about 81539.3170194600. The cubic root of 6648660220 is about 1880.3760583917.

The spelling of 6648660220 in words is "six billion, six hundred forty-eight million, six hundred sixty thousand, two hundred twenty".