6564673 has 2 divisors, whose sum is σ = 6564674. Its totient is φ = 6564672.

The previous prime is 6564667. The next prime is 6564707. The reversal of 6564673 is 3764656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6390784 + 173889 = 2528^2 + 417^2 .

It is a cyclic number.

It is not a de Polignac number, because 6564673 - 2²¹ = 4467521 is a prime.

It is not a weakly prime, because it can be changed into another prime (6564073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3282336 + 3282337.

It is an arithmetic number, because the mean of its divisors is an integer number (3282337).

Almost surely, 2^6564673 is an apocalyptic number.

It is an amenable number.

6564673 is a deficient number, since it is larger than the sum of its proper divisors (1).

6564673 is an equidigital number, since it uses as much as digits as its factorization.

6564673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 37.

The square root of 6564673 is about 2562.1617825578. The cubic root of 6564673 is about 187.2424719330.

It can be divided in two parts, 656 and 4673, that added together give a square (5329 = 73²).

The spelling of 6564673 in words is "six million, five hundred sixty-four thousand, six hundred seventy-three".