6666872 has 32 divisors (see below), whose sum is σ = 13737600. Its totient is φ = 3019104.

The previous prime is 6666841. The next prime is 6666883. The reversal of 6666872 is 2786666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2543 + ... + 4449.

It is an arithmetic number, because the mean of its divisors is an integer number (429300).

Almost surely, 2^6666872 is an apocalyptic number.

It is an amenable number.

6666872 is an abundant number, since it is smaller than the sum of its proper divisors (7070728).

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

6666872 is a wasteful number, since it uses less digits than its factorization.

6666872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955 (or 1951 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 6666872 is about 2582.0286597945. The cubic root of 6666872 is about 188.2091380170.

The spelling of 6666872 in words is "six million, six hundred sixty-six thousand, eight hundred seventy-two".