2666855976 has 32 divisors (see below), whose sum is σ = 6672243840. Its totient is φ = 888271488.

The previous prime is 2666855959. The next prime is 2666855981. The reversal of 2666855976 is 6795586662.

It is a happy number.

It is a super-2 number, since 2×2666855976² = 14224241593453825152, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10021 + ... + 73716.

It is an arithmetic number, because the mean of its divisors is an integer number (208507620).

Almost surely, 2^2666855976 is an apocalyptic number.

It is an amenable number.

2666855976 is an abundant number, since it is smaller than the sum of its proper divisors (4005387864).

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

2666855976 is a wasteful number, since it uses less digits than its factorization.

2666855976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85073 (or 85069 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 60.

The square root of 2666855976 is about 51641.6108966403. The cubic root of 2666855976 is about 1386.7553628649.

The spelling of 2666855976 in words is "two billion, six hundred sixty-six million, eight hundred fifty-five thousand, nine hundred seventy-six".