6668608 has 28 divisors (see below), whose sum is σ = 13693140. Its totient is φ = 3218432.

The previous prime is 6668603. The next prime is 6668611. The reversal of 6668608 is 8068666.

It can be written as a sum of positive squares in 2 ways, for example, as 2795584 + 3873024 = 1672^2 + 1968^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6668603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60 + ... + 3652.

Almost surely, 2^6668608 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 6668608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6846570).

6668608 is an abundant number, since it is smaller than the sum of its proper divisors (7024532).

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

6668608 is a wasteful number, since it uses less digits than its factorization.

6668608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3634 (or 3624 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 6668608 is about 2582.3648076908. The cubic root of 6668608 is about 188.2254726493.

The spelling of 6668608 in words is "six million, six hundred sixty-eight thousand, six hundred eight".