2666666672 has 40 divisors (see below), whose sum is σ = 5293542144. Its totient is φ = 1300670784.

The previous prime is 2666666659. The next prime is 2666666689. The reversal of 2666666672 is 2766666662.

2666666672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×2666666672⁴ (a number of 39 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674333 + ... + 678275.

Almost surely, 2^2666666672 is an apocalyptic number.

It is an amenable number.

2666666672 is a deficient number, since it is larger than the sum of its proper divisors (2626875472).

2666666672 is a wasteful number, since it uses less digits than its factorization.

2666666672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4977 (or 4971 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 53.

The square root of 2666666672 is about 51639.7780010720. The cubic root of 2666666672 is about 1386.7225496258.

The spelling of 2666666672 in words is "two billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred seventy-two".