6447043 has 4 divisors (see below), whose sum is σ = 6483240. Its totient is φ = 6410848.

The previous prime is 6447031. The next prime is 6447047. The reversal of 6447043 is 3407446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6447043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6447047) 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 in 3 ways as a sum of consecutive naturals, for example, 17830 + ... + 18187.

It is an arithmetic number, because the mean of its divisors is an integer number (1620810).

Almost surely, 2^6447043 is an apocalyptic number.

6447043 is a deficient number, since it is larger than the sum of its proper divisors (36197).

6447043 is a wasteful number, since it uses less digits than its factorization.

6447043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36196.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 6447043 is about 2539.1027942957. The cubic root of 6447043 is about 186.1173480018.

The spelling of 6447043 in words is "six million, four hundred forty-seven thousand, forty-three".