2066544617 has 2 divisors, whose sum is σ = 2066544618. Its totient is φ = 2066544616.

The previous prime is 2066544593. The next prime is 2066544619. The reversal of 2066544617 is 7164456602.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2034100201 + 32444416 = 45101^2 + 5696^2 .

It is a cyclic number.

It is not a de Polignac number, because 2066544617 - 2¹² = 2066540521 is a prime.

Together with 2066544619, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2066544619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033272308 + 1033272309.

It is an arithmetic number, because the mean of its divisors is an integer number (1033272309).

Almost surely, 2^2066544617 is an apocalyptic number.

It is an amenable number.

2066544617 is a deficient number, since it is larger than the sum of its proper divisors (1).

2066544617 is an equidigital number, since it uses as much as digits as its factorization.

2066544617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 2066544617 is about 45459.2632694372. The cubic root of 2066544617 is about 1273.7423697017.

The spelling of 2066544617 in words is "two billion, sixty-six million, five hundred forty-four thousand, six hundred seventeen".