6609620189 has 2 divisors, whose sum is σ = 6609620190. Its totient is φ = 6609620188.

The previous prime is 6609620141. The next prime is 6609620197. The reversal of 6609620189 is 9810269066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5752008964 + 857611225 = 75842^2 + 29285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6609620189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6609620119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3304810094 + 3304810095.

It is an arithmetic number, because the mean of its divisors is an integer number (3304810095).

Almost surely, 2^6609620189 is an apocalyptic number.

It is an amenable number.

6609620189 is a deficient number, since it is larger than the sum of its proper divisors (1).

6609620189 is an equidigital number, since it uses as much as digits as its factorization.

6609620189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 6609620189 is about 81299.5706569229. The cubic root of 6609620189 is about 1876.6883934014.

The spelling of 6609620189 in words is "six billion, six hundred nine million, six hundred twenty thousand, one hundred eighty-nine".