6800664 has 64 divisors (see below), whose sum is σ = 18627840. Its totient is φ = 2056320.

The previous prime is 6800657. The next prime is 6800669. The reversal of 6800664 is 4660086.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6800669) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 21999 + ... + 22305.

It is an arithmetic number, because the mean of its divisors is an integer number (291060).

Almost surely, 2^6800664 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 6800664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9313920).

6800664 is an abundant number, since it is smaller than the sum of its proper divisors (11827176).

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

6800664 is a wasteful number, since it uses less digits than its factorization.

6800664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 6800664 is about 2607.8082751613. The cubic root of 6800664 is about 189.4598137670.

The spelling of 6800664 in words is "six million, eight hundred thousand, six hundred sixty-four".