6506664 has 48 divisors (see below), whose sum is σ = 17190720. Its totient is φ = 2052000.

The previous prime is 6506657. The next prime is 6506693. The reversal of 6506664 is 4666056.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8289 + ... + 9039.

It is an arithmetic number, because the mean of its divisors is an integer number (358140).

Almost surely, 2^6506664 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 6506664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8595360).

6506664 is an abundant number, since it is smaller than the sum of its proper divisors (10684056).

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

6506664 is a wasteful number, since it uses less digits than its factorization.

6506664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 6506664 is about 2550.8163399194. The cubic root of 6506664 is about 186.6893141456.

The spelling of 6506664 in words is "six million, five hundred six thousand, six hundred sixty-four".