2066570291 has 2 divisors, whose sum is σ = 2066570292. Its totient is φ = 2066570290.

The previous prime is 2066570237. The next prime is 2066570323. The reversal of 2066570291 is 1920756602.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2066570291 - 2⁶ = 2066570227 is a prime.

It is not a weakly prime, because it can be changed into another prime (2066570491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033285145 + 1033285146.

It is an arithmetic number, because the mean of its divisors is an integer number (1033285146).

Almost surely, 2^2066570291 is an apocalyptic number.

2066570291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2066570291 is an equidigital number, since it uses as much as digits as its factorization.

2066570291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 2066570291 is about 45459.5456532509. The cubic root of 2066570291 is about 1273.7476445175.

The spelling of 2066570291 in words is "two billion, sixty-six million, five hundred seventy thousand, two hundred ninety-one".