6451859 has 2 divisors, whose sum is σ = 6451860. Its totient is φ = 6451858.

The previous prime is 6451853. The next prime is 6451871. The reversal of 6451859 is 9581546.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6451859 - 2⁴ = 6451843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6451853) 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, 3225929 + 3225930.

It is an arithmetic number, because the mean of its divisors is an integer number (3225930).

Almost surely, 2^6451859 is an apocalyptic number.

6451859 is a deficient number, since it is larger than the sum of its proper divisors (1).

6451859 is an equidigital number, since it uses as much as digits as its factorization.

6451859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 38.

The square root of 6451859 is about 2540.0509837403. The cubic root of 6451859 is about 186.1636802531.

The spelling of 6451859 in words is "six million, four hundred fifty-one thousand, eight hundred fifty-nine".