6668417 has 8 divisors (see below), whose sum is σ = 7636800. Its totient is φ = 5703984.

The previous prime is 6668381. The next prime is 6668419. The reversal of 6668417 is 7148666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6668417 - 2⁶ = 6668353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6668419) 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, 5459 + ... + 6567.

It is an arithmetic number, because the mean of its divisors is an integer number (954600).

Almost surely, 2^6668417 is an apocalyptic number.

It is an amenable number.

6668417 is a deficient number, since it is larger than the sum of its proper divisors (968383).

6668417 is a wasteful number, since it uses less digits than its factorization.

6668417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1975.

The product of its digits is 48384, while the sum is 38.

The square root of 6668417 is about 2582.3278258192. The cubic root of 6668417 is about 188.2236756022.

Subtracting 6668417 from its reverse (7148666), we obtain a square (480249 = 693²).

The spelling of 6668417 in words is "six million, six hundred sixty-eight thousand, four hundred seventeen".