6447074 has 4 divisors (see below), whose sum is σ = 9670614. Its totient is φ = 3223536.

The previous prime is 6447073. The next prime is 6447109. The reversal of 6447074 is 4707446.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4707446 = 2 ⋅2353723.

It can be written as a sum of positive squares in only one way, i.e., 5359225 + 1087849 = 2315^2 + 1043^2 .

It is a super-2 number, since 2×6447074² = 83129526322952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6447074.

It is not an unprimeable number, because it can be changed into a prime (6447073) 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 as a sum of consecutive naturals, namely, 1611767 + ... + 1611770.

Almost surely, 2^6447074 is an apocalyptic number.

6447074 is a deficient number, since it is larger than the sum of its proper divisors (3223540).

6447074 is a wasteful number, since it uses less digits than its factorization.

6447074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3223539.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 6447074 is about 2539.1088988068. The cubic root of 6447074 is about 186.1176463106.

The spelling of 6447074 in words is "six million, four hundred forty-seven thousand, seventy-four".