6666479 has 2 divisors, whose sum is σ = 6666480. Its totient is φ = 6666478.

The previous prime is 6666467. The next prime is 6666487. The reversal of 6666479 is 9746666.

6666479 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6666479 - 2⁸ = 6666223 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6666449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3333239 + 3333240.

It is an arithmetic number, because the mean of its divisors is an integer number (3333240).

Almost surely, 2^6666479 is an apocalyptic number.

6666479 is a deficient number, since it is larger than the sum of its proper divisors (1).

6666479 is an equidigital number, since it uses as much as digits as its factorization.

6666479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 44.

The square root of 6666479 is about 2581.9525557221. The cubic root of 6666479 is about 188.2054397487.

The spelling of 6666479 in words is "six million, six hundred sixty-six thousand, four hundred seventy-nine".