2666755673 has 2 divisors, whose sum is σ = 2666755674. Its totient is φ = 2666755672.

The previous prime is 2666755601. The next prime is 2666755703. The reversal of 2666755673 is 3765576662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1612584649 + 1054171024 = 40157^2 + 32468^2 .

It is a cyclic number.

It is not a de Polignac number, because 2666755673 - 2²⁶ = 2599646809 is a prime.

It is a super-2 number, since 2×2666755673² = 14223171638955365858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2666755073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333377836 + 1333377837.

It is an arithmetic number, because the mean of its divisors is an integer number (1333377837).

Almost surely, 2^2666755673 is an apocalyptic number.

It is an amenable number.

2666755673 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666755673 is an equidigital number, since it uses as much as digits as its factorization.

2666755673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9525600, while the sum is 53.

The square root of 2666755673 is about 51640.6397423580. The cubic root of 2666755673 is about 1386.7379769158.

The spelling of 2666755673 in words is "two billion, six hundred sixty-six million, seven hundred fifty-five thousand, six hundred seventy-three".