6447124 has 6 divisors (see below), whose sum is σ = 11282474. Its totient is φ = 3223560.

The previous prime is 6447121. The next prime is 6447149. The reversal of 6447124 is 4217446.

It can be written as a sum of positive squares in only one way, i.e., 6411024 + 36100 = 2532^2 + 190^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6447092 and 6447101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6447121) 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 as a sum of consecutive naturals, namely, 805887 + ... + 805894.

Almost surely, 2^6447124 is an apocalyptic number.

It is an amenable number.

6447124 is a deficient number, since it is larger than the sum of its proper divisors (4835350).

6447124 is a wasteful number, since it uses less digits than its factorization.

6447124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611785 (or 1611783 counting only the distinct ones).

The product of its digits is 5376, while the sum is 28.

The square root of 6447124 is about 2539.1187447617. The cubic root of 6447124 is about 186.1181274518.

The spelling of 6447124 in words is "six million, four hundred forty-seven thousand, one hundred twenty-four".