6647042 has 8 divisors (see below), whose sum is σ = 9983100. Its totient is φ = 3319344.

The previous prime is 6647041. The next prime is 6647059. The reversal of 6647042 is 2407466.

It can be written as a sum of positive squares in 2 ways, for example, as 6405961 + 241081 = 2531^2 + 491^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 6646996 and 6647014.

It is not an unprimeable number, because it can be changed into a prime (6647041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 584 + ... + 3692.

Almost surely, 2^6647042 is an apocalyptic number.

6647042 is a deficient number, since it is larger than the sum of its proper divisors (3336058).

6647042 is a wasteful number, since it uses less digits than its factorization.

6647042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4180.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 6647042 is about 2578.1857962529. The cubic root of 6647042 is about 188.0223490859.

The spelling of 6647042 in words is "six million, six hundred forty-seven thousand, forty-two".