6668817 has 16 divisors (see below), whose sum is σ = 9123840. Its totient is φ = 4331600.

The previous prime is 6668807. The next prime is 6668821. The reversal of 6668817 is 7188666.

6668817 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 6668817 - 2¹¹ = 6666769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6668807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27784 + ... + 28022.

It is an arithmetic number, because the mean of its divisors is an integer number (570240).

Almost surely, 2^6668817 is an apocalyptic number.

It is an amenable number.

6668817 is a deficient number, since it is larger than the sum of its proper divisors (2455023).

6668817 is a wasteful number, since it uses less digits than its factorization.

6668817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444.

The product of its digits is 96768, while the sum is 42.

The square root of 6668817 is about 2582.4052741582. The cubic root of 6668817 is about 188.2274390124.

The spelling of 6668817 in words is "six million, six hundred sixty-eight thousand, eight hundred seventeen".