6105661 has 2 divisors, whose sum is σ = 6105662. Its totient is φ = 6105660.

The previous prime is 6105641. The next prime is 6105683. The reversal of 6105661 is 1665016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6100900 + 4761 = 2470^2 + 69^2 .

It is a cyclic number.

It is not a de Polignac number, because 6105661 - 2⁹ = 6105149 is a prime.

6105661 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6105611) 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 as a sum of consecutive naturals, namely, 3052830 + 3052831.

It is an arithmetic number, because the mean of its divisors is an integer number (3052831).

Almost surely, 2^6105661 is an apocalyptic number.

It is an amenable number.

6105661 is a deficient number, since it is larger than the sum of its proper divisors (1).

6105661 is an equidigital number, since it uses as much as digits as its factorization.

6105661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 6105661 is about 2470.9635772306. The cubic root of 6105661 is about 182.7725183610.

The spelling of 6105661 in words is "six million, one hundred five thousand, six hundred sixty-one".