6447172 has 12 divisors (see below), whose sum is σ = 11323116. Its totient is φ = 3212000.

The previous prime is 6447167. The next prime is 6447173. The reversal of 6447172 is 2717446.

It can be written as a sum of positive squares in 2 ways, for example, as 6230016 + 217156 = 2496^2 + 466^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6447173) 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 3 ways as a sum of consecutive naturals, for example, 1579 + ... + 3922.

It is an arithmetic number, because the mean of its divisors is an integer number (943593).

Almost surely, 2^6447172 is an apocalyptic number.

It is an amenable number.

6447172 is a deficient number, since it is larger than the sum of its proper divisors (4875944).

6447172 is a wasteful number, since it uses less digits than its factorization.

6447172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5798 (or 5796 counting only the distinct ones).

The product of its digits is 9408, while the sum is 31.

The square root of 6447172 is about 2539.1281968424. The cubic root of 6447172 is about 186.1185893450.

The spelling of 6447172 in words is "six million, four hundred forty-seven thousand, one hundred seventy-two".