6557479 has 2 divisors, whose sum is σ = 6557480. Its totient is φ = 6557478.

The previous prime is 6557471. The next prime is 6557513. The reversal of 6557479 is 9747556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6557479 - 2³ = 6557471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6557471) 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 as a sum of consecutive naturals, namely, 3278739 + 3278740.

It is an arithmetic number, because the mean of its divisors is an integer number (3278740).

Almost surely, 2^6557479 is an apocalyptic number.

6557479 is a deficient number, since it is larger than the sum of its proper divisors (1).

6557479 is an equidigital number, since it uses as much as digits as its factorization.

6557479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 264600, while the sum is 43.

The square root of 6557479 is about 2560.7575051145. The cubic root of 6557479 is about 187.1740493985.

The spelling of 6557479 in words is "six million, five hundred fifty-seven thousand, four hundred seventy-nine".