2666944 has 28 divisors (see below), whose sum is σ = 6049264. Its totient is φ = 1142784.

The previous prime is 2666929. The next prime is 2666947. The reversal of 2666944 is 4496662.

2666944 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (28).

It is a super-2 number, since 2×2666944² = 14225180598272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2529 + ... + 3424.

2^2666944 is an apocalyptic number.

It is an amenable number.

2666944 is an abundant number, since it is smaller than the sum of its proper divisors (3382320).

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

2666944 is an equidigital number, since it uses as much as digits as its factorization.

2666944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5972 (or 5962 counting only the distinct ones).

The product of its digits is 62208, while the sum is 37.

The square root of 2666944 is about 1633.0780752922. The cubic root of 2666944 is about 138.6770620083.

The spelling of 2666944 in words is "two million, six hundred sixty-six thousand, nine hundred forty-four".