6668467 has 4 divisors (see below), whose sum is σ = 7181440. Its totient is φ = 6155496.

The previous prime is 6668461. The next prime is 6668507. The reversal of 6668467 is 7648666.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7648666 = 2 ⋅3824333.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6668467 is a prime.

It is a Duffinian number.

6668467 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6668461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256467 + ... + 256492.

It is an arithmetic number, because the mean of its divisors is an integer number (1795360).

Almost surely, 2^6668467 is an apocalyptic number.

6668467 is a deficient number, since it is larger than the sum of its proper divisors (512973).

6668467 is a wasteful number, since it uses less digits than its factorization.

6668467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512972.

The product of its digits is 290304, while the sum is 43.

The square root of 6668467 is about 2582.3375069886. The cubic root of 6668467 is about 188.2241460367.

The spelling of 6668467 in words is "six million, six hundred sixty-eight thousand, four hundred sixty-seven".