6666800 has 60 divisors (see below), whose sum is σ = 18312816. Its totient is φ = 2284800.

The previous prime is 6666797. The next prime is 6666833. The reversal of 6666800 is 86666.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1610 + ... + 3990.

Almost surely, 2^6666800 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6666800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9156408).

6666800 is an abundant number, since it is smaller than the sum of its proper divisors (11646016).

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

6666800 is a wasteful number, since it uses less digits than its factorization.

6666800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406 (or 2395 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 6666800 is about 2582.0147172315. The cubic root of 6666800 is about 188.2084604825.

It can be divided in two parts, 66 and 66800, that added together give a palindrome (66866).

The spelling of 6666800 in words is "six million, six hundred sixty-six thousand, eight hundred".