2660220636 has 48 divisors (see below), whose sum is σ = 6273590400. Its totient is φ = 877303872.

The previous prime is 2660220631. The next prime is 2660220637. The reversal of 2660220636 is 6360220662.

It is a junction number, because it is equal to n+sod(n) for n = 2660220597 and 2660220606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660220631) 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, 444955 + ... + 450893.

It is an arithmetic number, because the mean of its divisors is an integer number (130699800).

Almost surely, 2^2660220636 is an apocalyptic number.

It is an amenable number.

2660220636 is an abundant number, since it is smaller than the sum of its proper divisors (3613369764).

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

2660220636 is a wasteful number, since it uses less digits than its factorization.

2660220636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6338 (or 6336 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 2660220636 is about 51577.3267628325. The cubic root of 2660220636 is about 1385.6042901662.

The spelling of 2660220636 in words is "two billion, six hundred sixty million, two hundred twenty thousand, six hundred thirty-six".