6668331 has 8 divisors (see below), whose sum is σ = 9013200. Its totient is φ = 4384512.

The previous prime is 6668273. The next prime is 6668341. The reversal of 6668331 is 1338666.

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

It is not a de Polignac number, because 6668331 - 2⁷ = 6668203 is a prime.

It is a super-2 number, since 2×6668331² = 88933276651122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

6668331 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6668292 and 6668301.

It is not an unprimeable number, because it can be changed into a prime (6668341) 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, 15006 + ... + 15443.

It is an arithmetic number, because the mean of its divisors is an integer number (1126650).

Almost surely, 2^6668331 is an apocalyptic number.

6668331 is a deficient number, since it is larger than the sum of its proper divisors (2344869).

6668331 is a wasteful number, since it uses less digits than its factorization.

6668331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30525.

The product of its digits is 15552, while the sum is 33.

The square root of 6668331 is about 2582.3111741229. The cubic root of 6668331 is about 188.2228664494. Note that the first 3 decimals are identical.

The spelling of 6668331 in words is "six million, six hundred sixty-eight thousand, three hundred thirty-one".