6658843 has 2 divisors, whose sum is σ = 6658844. Its totient is φ = 6658842.

The previous prime is 6658837. The next prime is 6658859. The reversal of 6658843 is 3488566.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6658843 - 2⁹ = 6658331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6658796 and 6658805.

It is not a weakly prime, because it can be changed into another prime (6658823) 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, 3329421 + 3329422.

It is an arithmetic number, because the mean of its divisors is an integer number (3329422).

Almost surely, 2^6658843 is an apocalyptic number.

6658843 is a deficient number, since it is larger than the sum of its proper divisors (1).

6658843 is an equidigital number, since it uses as much as digits as its factorization.

6658843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 40.

The square root of 6658843 is about 2580.4734061796. The cubic root of 6658843 is about 188.1335534350.

The spelling of 6658843 in words is "six million, six hundred fifty-eight thousand, eight hundred forty-three".