2766676721 has 2 divisors, whose sum is σ = 2766676722. Its totient is φ = 2766676720.

The previous prime is 2766676699. The next prime is 2766676727. The reversal of 2766676721 is 1276766672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1551178225 + 1215498496 = 39385^2 + 34864^2 .

It is a cyclic number.

It is not a de Polignac number, because 2766676721 - 2¹⁰ = 2766675697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2766676721.

It is not a weakly prime, because it can be changed into another prime (2766676727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1383338360 + 1383338361.

It is an arithmetic number, because the mean of its divisors is an integer number (1383338361).

Almost surely, 2^2766676721 is an apocalyptic number.

It is an amenable number.

2766676721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2766676721 is an equidigital number, since it uses as much as digits as its factorization.

2766676721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1778112, while the sum is 50.

The square root of 2766676721 is about 52599.2083685677. The cubic root of 2766676721 is about 1403.8460099628.

The spelling of 2766676721 in words is "two billion, seven hundred sixty-six million, six hundred seventy-six thousand, seven hundred twenty-one".