6666006 has 16 divisors (see below), whose sum is σ = 14116464. Its totient is φ = 2091264.

The previous prime is 6666001. The next prime is 6666029. The reversal of 6666006 is 6006666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666001) by changing a digit.

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, 32575 + ... + 32778.

It is an arithmetic number, because the mean of its divisors is an integer number (882279).

Almost surely, 2^6666006 is an apocalyptic number.

6666006 is an abundant number, since it is smaller than the sum of its proper divisors (7450458).

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

6666006 is a wasteful number, since it uses less digits than its factorization.

6666006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65375.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 6666006 is about 2581.8609567519. The cubic root of 6666006 is about 188.2009884595.

The spelling of 6666006 in words is "six million, six hundred sixty-six thousand, six".