2066787673 has 2 divisors, whose sum is σ = 2066787674. Its totient is φ = 2066787672.

The previous prime is 2066787649. The next prime is 2066787703. The reversal of 2066787673 is 3767876602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2051002944 + 15784729 = 45288^2 + 3973^2 .

It is a cyclic number.

It is not a de Polignac number, because 2066787673 - 2²⁹ = 1529916761 is a prime.

It is a super-2 number, since 2×2066787673² = 8543222570529509858, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2066787673.

It is not a weakly prime, because it can be changed into another prime (2066787623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033393836 + 1033393837.

It is an arithmetic number, because the mean of its divisors is an integer number (1033393837).

Almost surely, 2^2066787673 is an apocalyptic number.

It is an amenable number.

2066787673 is a deficient number, since it is larger than the sum of its proper divisors (1).

2066787673 is an equidigital number, since it uses as much as digits as its factorization.

2066787673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3556224, while the sum is 52.

The square root of 2066787673 is about 45461.9365293649. The cubic root of 2066787673 is about 1273.7923046812.

The spelling of 2066787673 in words is "two billion, sixty-six million, seven hundred eighty-seven thousand, six hundred seventy-three".