6616189 has 2 divisors, whose sum is σ = 6616190. Its totient is φ = 6616188.

The previous prime is 6616163. The next prime is 6616217. The reversal of 6616189 is 9816166.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6335289 + 280900 = 2517^2 + 530^2 .

It is a cyclic number.

It is not a de Polignac number, because 6616189 - 2⁹ = 6615677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6616139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3308094 + 3308095.

It is an arithmetic number, because the mean of its divisors is an integer number (3308095).

Almost surely, 2^6616189 is an apocalyptic number.

It is an amenable number.

6616189 is a deficient number, since it is larger than the sum of its proper divisors (1).

6616189 is an equidigital number, since it uses as much as digits as its factorization.

6616189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 37.

The square root of 6616189 is about 2572.1953658305. The cubic root of 6616189 is about 187.7309888002.

The spelling of 6616189 in words is "six million, six hundred sixteen thousand, one hundred eighty-nine".