6664168 has 32 divisors (see below), whose sum is σ = 14529600. Its totient is φ = 2806272.

The previous prime is 6664159. The next prime is 6664169. The reversal of 6664168 is 8614666.

It is a super-2 number, since 2×6664168² = 88822270264448, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6664169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2296 + ... + 4312.

It is an arithmetic number, because the mean of its divisors is an integer number (454050).

Almost surely, 2^6664168 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 6664168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7264800).

6664168 is an abundant number, since it is smaller than the sum of its proper divisors (7865432).

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

6664168 is a wasteful number, since it uses less digits than its factorization.

6664168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089 (or 2085 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 6664168 is about 2581.5049874056. The cubic root of 6664168 is about 188.1836894844.

The spelling of 6664168 in words is "six million, six hundred sixty-four thousand, one hundred sixty-eight".