6649733 has 2 divisors, whose sum is σ = 6649734. Its totient is φ = 6649732.

The previous prime is 6649723. The next prime is 6649801. The reversal of 6649733 is 3379466.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6061444 + 588289 = 2462^2 + 767^2 .

It is a cyclic number.

It is not a de Polignac number, because 6649733 - 2¹² = 6645637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6649723) 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, 3324866 + 3324867.

It is an arithmetic number, because the mean of its divisors is an integer number (3324867).

Almost surely, 2^6649733 is an apocalyptic number.

It is an amenable number.

6649733 is a deficient number, since it is larger than the sum of its proper divisors (1).

6649733 is an equidigital number, since it uses as much as digits as its factorization.

6649733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 38.

The square root of 6649733 is about 2578.7076220464. The cubic root of 6649733 is about 188.0477187605.

The spelling of 6649733 in words is "six million, six hundred forty-nine thousand, seven hundred thirty-three".