6447244 has 12 divisors (see below), whose sum is σ = 11300464. Its totient is φ = 3218544.

The previous prime is 6447239. The next prime is 6447253. The reversal of 6447244 is 4427446.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4297 + ... + 5599.

Almost surely, 2^6447244 is an apocalyptic number.

It is an amenable number.

6447244 is a deficient number, since it is larger than the sum of its proper divisors (4853220).

6447244 is a wasteful number, since it uses less digits than its factorization.

6447244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544 (or 2542 counting only the distinct ones).

The product of its digits is 21504, while the sum is 31.

The square root of 6447244 is about 2539.1423748975. The cubic root of 6447244 is about 186.1192821805.

It can be divided in two parts, 64472 and 44, that added together give a square (64516 = 254²).

The spelling of 6447244 in words is "six million, four hundred forty-seven thousand, two hundred forty-four".