6436447 has 2 divisors, whose sum is σ = 6436448. Its totient is φ = 6436446.

The previous prime is 6436379. The next prime is 6436457. The reversal of 6436447 is 7446346.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6436447 is a prime.

6436447 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6436457) 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, 3218223 + 3218224.

It is an arithmetic number, because the mean of its divisors is an integer number (3218224).

Almost surely, 2^6436447 is an apocalyptic number.

6436447 is a deficient number, since it is larger than the sum of its proper divisors (1).

6436447 is an equidigital number, since it uses as much as digits as its factorization.

6436447 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 6436447 is about 2537.0153724406. The cubic root of 6436447 is about 186.0153280620.

The spelling of 6436447 in words is "six million, four hundred thirty-six thousand, four hundred forty-seven".