6668339 has 4 divisors (see below), whose sum is σ = 6696480. Its totient is φ = 6640200.

The previous prime is 6668273. The next prime is 6668341. The reversal of 6668339 is 9338666.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9338666 = 2 ⋅4669333.

It is a cyclic number.

It is not a de Polignac number, because 6668339 - 2⁸ = 6668083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6668296 and 6668305.

It is not an unprimeable number, because it can be changed into a prime (6668359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13712 + ... + 14189.

It is an arithmetic number, because the mean of its divisors is an integer number (1674120).

Almost surely, 2^6668339 is an apocalyptic number.

6668339 is a deficient number, since it is larger than the sum of its proper divisors (28141).

6668339 is a wasteful number, since it uses less digits than its factorization.

6668339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28140.

The product of its digits is 139968, while the sum is 41.

The square root of 6668339 is about 2582.3127231224. The cubic root of 6668339 is about 188.2229417197. Note that the first 3 decimals are identical.

It can be divided in two parts, 6668 and 339, that added together give a palindrome (7007).

The spelling of 6668339 in words is "six million, six hundred sixty-eight thousand, three hundred thirty-nine".