6641573 has 2 divisors, whose sum is σ = 6641574. Its totient is φ = 6641572.

The previous prime is 6641567. The next prime is 6641587. The reversal of 6641573 is 3751466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6466849 + 174724 = 2543^2 + 418^2 .

It is a cyclic number.

It is not a de Polignac number, because 6641573 - 2¹⁰ = 6640549 is a prime.

It is a super-2 number, since 2×6641573² = 88220983828658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6641513) 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, 3320786 + 3320787.

It is an arithmetic number, because the mean of its divisors is an integer number (3320787).

Almost surely, 2^6641573 is an apocalyptic number.

It is an amenable number.

6641573 is a deficient number, since it is larger than the sum of its proper divisors (1).

6641573 is an equidigital number, since it uses as much as digits as its factorization.

6641573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 32.

The square root of 6641573 is about 2577.1249484649. The cubic root of 6641573 is about 187.9707684293.

The spelling of 6641573 in words is "six million, six hundred forty-one thousand, five hundred seventy-three".