6659243 has 2 divisors, whose sum is σ = 6659244. Its totient is φ = 6659242.

The previous prime is 6659239. The next prime is 6659249. The reversal of 6659243 is 3429566.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6659243 - 2² = 6659239 is a prime.

It is a d-powerful number, because it can be written as 6² + 6⁸ + 5 + 9 + 2¹⁷ + 4⁸ + 3¹⁴ .

It is not a weakly prime, because it can be changed into another prime (6659249) 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, 3329621 + 3329622.

It is an arithmetic number, because the mean of its divisors is an integer number (3329622).

Almost surely, 2^6659243 is an apocalyptic number.

6659243 is a deficient number, since it is larger than the sum of its proper divisors (1).

6659243 is an equidigital number, since it uses as much as digits as its factorization.

6659243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 35.

The square root of 6659243 is about 2580.5509101740. The cubic root of 6659243 is about 188.1373204515.

The spelling of 6659243 in words is "six million, six hundred fifty-nine thousand, two hundred forty-three".