6663168 has 88 divisors (see below), whose sum is σ = 19814960. Its totient is φ = 2211840.

The previous prime is 6663121. The next prime is 6663179. The reversal of 6663168 is 8613666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27528 + ... + 27768.

It is an arithmetic number, because the mean of its divisors is an integer number (225170).

Almost surely, 2^6663168 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 6663168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9907480).

6663168 is an abundant number, since it is smaller than the sum of its proper divisors (13151792).

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

6663168 is a wasteful number, since it uses less digits than its factorization.

6663168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 246 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 6663168 is about 2581.3112946718. The cubic root of 6663168 is about 188.1742763012.

The spelling of 6663168 in words is "six million, six hundred sixty-three thousand, one hundred sixty-eight".