6605189 has 4 divisors (see below), whose sum is σ = 6663756. Its totient is φ = 6546624.

The previous prime is 6605171. The next prime is 6605191. The reversal of 6605189 is 9815066.

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 128164 + 6477025 = 358^2 + 2545^2 .

It is a cyclic number.

It is not a de Polignac number, because 6605189 - 2¹² = 6601093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6605119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29114 + ... + 29339.

It is an arithmetic number, because the mean of its divisors is an integer number (1665939).

Almost surely, 2^6605189 is an apocalyptic number.

It is an amenable number.

6605189 is a deficient number, since it is larger than the sum of its proper divisors (58567).

6605189 is a wasteful number, since it uses less digits than its factorization.

6605189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58566.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 6605189 is about 2570.0562250659. The cubic root of 6605189 is about 187.6268912917.

The spelling of 6605189 in words is "six million, six hundred five thousand, one hundred eighty-nine".