6664916 has 12 divisors (see below), whose sum is σ = 11682132. Its totient is φ = 3327168.

The previous prime is 6664891. The next prime is 6664937. The reversal of 6664916 is 6194666.

It can be written as a sum of positive squares in 2 ways, for example, as 5541316 + 1123600 = 2354^2 + 1060^2 .

It is a super-2 number, since 2×6664916² = 88842210574112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6664916.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3326 + ... + 4938.

It is an arithmetic number, because the mean of its divisors is an integer number (973511).

Almost surely, 2^6664916 is an apocalyptic number.

It is an amenable number.

6664916 is a deficient number, since it is larger than the sum of its proper divisors (5017216).

6664916 is a wasteful number, since it uses less digits than its factorization.

6664916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650 (or 2648 counting only the distinct ones).

The product of its digits is 46656, while the sum is 38.

The square root of 6664916 is about 2581.6498600701. The cubic root of 6664916 is about 188.1907299299.

The spelling of 6664916 in words is "six million, six hundred sixty-four thousand, nine hundred sixteen".