6446347 has 2 divisors, whose sum is σ = 6446348. Its totient is φ = 6446346.

The previous prime is 6446299. The next prime is 6446351. The reversal of 6446347 is 7436446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6446347 - 2¹¹ = 6444299 is a prime.

It is not a weakly prime, because it can be changed into another prime (6446387) 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, 3223173 + 3223174.

It is an arithmetic number, because the mean of its divisors is an integer number (3223174).

Almost surely, 2^6446347 is an apocalyptic number.

6446347 is a deficient number, since it is larger than the sum of its proper divisors (1).

6446347 is an equidigital number, since it uses as much as digits as its factorization.

6446347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 34.

The square root of 6446347 is about 2538.9657343099. The cubic root of 6446347 is about 186.1106502369.

Subtracting 6446347 from its reverse (7436446), we obtain a palindrome (990099).

The spelling of 6446347 in words is "six million, four hundred forty-six thousand, three hundred forty-seven".