6668297 has 4 divisors (see below), whose sum is σ = 7019280. Its totient is φ = 6317316.

The previous prime is 6668273. The next prime is 6668341. The reversal of 6668297 is 7928666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7928666 = 2 ⋅3964333.

It is a cyclic number.

It is not a de Polignac number, because 6668297 - 2¹⁰ = 6667273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6668237) 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, 175463 + ... + 175500.

It is an arithmetic number, because the mean of its divisors is an integer number (1754820).

Almost surely, 2^6668297 is an apocalyptic number.

It is an amenable number.

6668297 is a deficient number, since it is larger than the sum of its proper divisors (350983).

6668297 is a wasteful number, since it uses less digits than its factorization.

6668297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350982.

The product of its digits is 217728, while the sum is 44.

The square root of 6668297 is about 2582.3045908645. The cubic root of 6668297 is about 188.2225465498. Note that the first 3 decimals are identical.

The spelling of 6668297 in words is "six million, six hundred sixty-eight thousand, two hundred ninety-seven".