6426559 has 2 divisors, whose sum is σ = 6426560. Its totient is φ = 6426558.

The previous prime is 6426557. The next prime is 6426569. The reversal of 6426559 is 9556246.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6426559 - 2¹ = 6426557 is a prime.

Together with 6426557, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6426557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3213279 + 3213280.

It is an arithmetic number, because the mean of its divisors is an integer number (3213280).

Almost surely, 2^6426559 is an apocalyptic number.

6426559 is a deficient number, since it is larger than the sum of its proper divisors (1).

6426559 is an equidigital number, since it uses as much as digits as its factorization.

6426559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 37.

The square root of 6426559 is about 2535.0658768561. The cubic root of 6426559 is about 185.9200238124.

The spelling of 6426559 in words is "six million, four hundred twenty-six thousand, five hundred fifty-nine".