6617189 has 2 divisors, whose sum is σ = 6617190. Its totient is φ = 6617188.

The previous prime is 6617183. The next prime is 6617197. The reversal of 6617189 is 9817166.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5313025 + 1304164 = 2305^2 + 1142^2 .

It is a cyclic number.

It is not a de Polignac number, because 6617189 - 2⁴ = 6617173 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6617183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3308594 + 3308595.

It is an arithmetic number, because the mean of its divisors is an integer number (3308595).

Almost surely, 2^6617189 is an apocalyptic number.

It is an amenable number.

6617189 is a deficient number, since it is larger than the sum of its proper divisors (1).

6617189 is an equidigital number, since it uses as much as digits as its factorization.

6617189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 38.

The square root of 6617189 is about 2572.3897449648. The cubic root of 6617189 is about 187.7404464871.

The spelling of 6617189 in words is "six million, six hundred seventeen thousand, one hundred eighty-nine".