6606745 has 4 divisors (see below), whose sum is σ = 7928100. Its totient is φ = 5285392.

The previous prime is 6606739. The next prime is 6606749. The reversal of 6606745 is 5476066.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4359744 + 2247001 = 2088^2 + 1499^2 .

It is a cyclic number.

It is not a de Polignac number, because 6606745 - 2⁹ = 6606233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6606745.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6606749) 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 3 ways as a sum of consecutive naturals, for example, 660670 + ... + 660679.

It is an arithmetic number, because the mean of its divisors is an integer number (1982025).

Almost surely, 2^6606745 is an apocalyptic number.

It is an amenable number.

6606745 is a deficient number, since it is larger than the sum of its proper divisors (1321355).

6606745 is a wasteful number, since it uses less digits than its factorization.

6606745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321354.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 6606745 is about 2570.3589243528. The cubic root of 6606745 is about 187.6416233718.

The spelling of 6606745 in words is "six million, six hundred six thousand, seven hundred forty-five".