6447144 has 32 divisors (see below), whose sum is σ = 17583840. Its totient is φ = 1953600.

The previous prime is 6447121. The next prime is 6447149. The reversal of 6447144 is 4417446.

It is not an unprimeable number, because it can be changed into a prime (6447149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11947 + ... + 12474.

It is an arithmetic number, because the mean of its divisors is an integer number (549495).

Almost surely, 2^6447144 is an apocalyptic number.

It is an amenable number.

6447144 is an abundant number, since it is smaller than the sum of its proper divisors (11136696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6447144 is a wasteful number, since it uses less digits than its factorization.

6447144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24441 (or 24437 counting only the distinct ones).

The product of its digits is 10752, while the sum is 30.

The square root of 6447144 is about 2539.1226831329. The cubic root of 6447144 is about 186.1183199076.

The spelling of 6447144 in words is "six million, four hundred forty-seven thousand, one hundred forty-four".