6478279 has 2 divisors, whose sum is σ = 6478280. Its totient is φ = 6478278.

The previous prime is 6478273. The next prime is 6478301. The reversal of 6478279 is 9728746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6478279 - 2⁹ = 6477767 is a prime.

It is a d-powerful number, because it can be written as 6⁶ + 4⁵ + 7⁷ + 8³ + 2⁵ + 7⁷ + 9⁷ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6478273) 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, 3239139 + 3239140.

It is an arithmetic number, because the mean of its divisors is an integer number (3239140).

Almost surely, 2^6478279 is an apocalyptic number.

6478279 is a deficient number, since it is larger than the sum of its proper divisors (1).

6478279 is an equidigital number, since it uses as much as digits as its factorization.

6478279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 43.

The square root of 6478279 is about 2545.2463534990. The cubic root of 6478279 is about 186.4174441207.

The spelling of 6478279 in words is "six million, four hundred seventy-eight thousand, two hundred seventy-nine".