2146704661 has 2 divisors, whose sum is σ = 2146704662. Its totient is φ = 2146704660.

The previous prime is 2146704629. The next prime is 2146704689. The reversal of 2146704661 is 1664076412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2069704036 + 77000625 = 45494^2 + 8775^2 .

It is a cyclic number.

It is not a de Polignac number, because 2146704661 - 2⁵ = 2146704629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2146704661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2146704361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1073352330 + 1073352331.

It is an arithmetic number, because the mean of its divisors is an integer number (1073352331).

Almost surely, 2^2146704661 is an apocalyptic number.

It is an amenable number.

2146704661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2146704661 is an equidigital number, since it uses as much as digits as its factorization.

2146704661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 2146704661 is about 46332.5442966388. The cubic root of 2146704661 is about 1290.0031370234.

The spelling of 2146704661 in words is "two billion, one hundred forty-six million, seven hundred four thousand, six hundred sixty-one".