2666911620 has 48 divisors (see below), whose sum is σ = 7469683200. Its totient is φ = 710954496.

The previous prime is 2666911613. The next prime is 2666911627. The reversal of 2666911620 is 261196662.

It is an interprime number because it is at equal distance from previous prime (2666911613) and next prime (2666911627).

It is a super-2 number, since 2×2666911620² = 14224835177782048800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2666911627) 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 15 ways as a sum of consecutive naturals, for example, 296956 + ... + 305804.

It is an arithmetic number, because the mean of its divisors is an integer number (155618400).

Almost surely, 2^2666911620 is an apocalyptic number.

2666911620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2666911620 is an abundant number, since it is smaller than the sum of its proper divisors (4802771580).

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

2666911620 is a wasteful number, since it uses less digits than its factorization.

2666911620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13884 (or 13882 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 2666911620 is about 51642.1496454205. The cubic root of 2666911620 is about 1386.7650076901.

The spelling of 2666911620 in words is "two billion, six hundred sixty-six million, nine hundred eleven thousand, six hundred twenty".