6646041 has 12 divisors (see below), whose sum is σ = 9781668. Its totient is φ = 4346784.

The previous prime is 6646039. The next prime is 6646049. The reversal of 6646041 is 1406466.

It can be written as a sum of positive squares in 2 ways, for example, as 6051600 + 594441 = 2460^2 + 771^2 .

It is not a de Polignac number, because 6646041 - 2¹ = 6646039 is a prime.

6646041 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6645996 and 6646014.

It is not an unprimeable number, because it can be changed into a prime (6646049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6490 + ... + 7443.

It is an arithmetic number, because the mean of its divisors is an integer number (815139).

Almost surely, 2^6646041 is an apocalyptic number.

It is an amenable number.

6646041 is a deficient number, since it is larger than the sum of its proper divisors (3135627).

6646041 is a wasteful number, since it uses less digits than its factorization.

6646041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13992 (or 13989 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 6646041 is about 2577.9916601882. The cubic root of 6646041 is about 188.0129103100.

The spelling of 6646041 in words is "six million, six hundred forty-six thousand, forty-one".