6855479 has 2 divisors, whose sum is σ = 6855480. Its totient is φ = 6855478.

The previous prime is 6855463. The next prime is 6855481. The reversal of 6855479 is 9745586.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6855479 - 2⁴ = 6855463 is a prime.

Together with 6855481, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6855419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3427739 + 3427740.

It is an arithmetic number, because the mean of its divisors is an integer number (3427740).

Almost surely, 2^6855479 is an apocalyptic number.

6855479 is a deficient number, since it is larger than the sum of its proper divisors (1).

6855479 is an equidigital number, since it uses as much as digits as its factorization.

6855479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 44.

The square root of 6855479 is about 2618.2969655866. The cubic root of 6855479 is about 189.9674828932.

The spelling of 6855479 in words is "six million, eight hundred fifty-five thousand, four hundred seventy-nine".