6661168 has 30 divisors (see below), whose sum is σ = 13508684. Its totient is φ = 3181728.

The previous prime is 6661157. The next prime is 6661189. The reversal of 6661168 is 8611666.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8071 + ... + 8857.

Almost surely, 2^6661168 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 6661168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6754342).

6661168 is an abundant number, since it is smaller than the sum of its proper divisors (6847516).

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

6661168 is a wasteful number, since it uses less digits than its factorization.

6661168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841 (or 812 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 6661168 is about 2580.9238655954. The cubic root of 6661168 is about 188.1554471090.

The spelling of 6661168 in words is "six million, six hundred sixty-one thousand, one hundred sixty-eight".