6649450 has 12 divisors (see below), whose sum is σ = 12368070. Its totient is φ = 2659760.

The previous prime is 6649441. The next prime is 6649453. The reversal of 6649450 is 549466.

It can be written as a sum of positive squares in 3 ways, for example, as 3066001 + 3583449 = 1751^2 + 1893^2 .

It is not an unprimeable number, because it can be changed into a prime (6649453) 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 in 5 ways as a sum of consecutive naturals, for example, 66445 + ... + 66544.

Almost surely, 2^6649450 is an apocalyptic number.

6649450 is a deficient number, since it is larger than the sum of its proper divisors (5718620).

6649450 is a wasteful number, since it uses less digits than its factorization.

6649450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133001 (or 132996 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 6649450 is about 2578.6527490145. The cubic root of 6649450 is about 188.0450510715.

The spelling of 6649450 in words is "six million, six hundred forty-nine thousand, four hundred fifty".