2666304869 has 2 divisors, whose sum is σ = 2666304870. Its totient is φ = 2666304868.

The previous prime is 2666304857. The next prime is 2666304881. The reversal of 2666304869 is 9684036662.

It is a balanced prime because it is at equal distance from previous prime (2666304857) and next prime (2666304881).

It can be written as a sum of positive squares in only one way, i.e., 2224254244 + 442050625 = 47162^2 + 21025^2 .

It is a cyclic number.

It is not a de Polignac number, because 2666304869 - 2¹⁶ = 2666239333 is a prime.

It is a super-2 number, since 2×2666304869² = 14218363308906214322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2665304869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333152434 + 1333152435.

It is an arithmetic number, because the mean of its divisors is an integer number (1333152435).

Almost surely, 2^2666304869 is an apocalyptic number.

It is an amenable number.

2666304869 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666304869 is an equidigital number, since it uses as much as digits as its factorization.

2666304869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2239488, while the sum is 50.

The square root of 2666304869 is about 51636.2747397602. The cubic root of 2666304869 is about 1386.6598317420.

The spelling of 2666304869 in words is "two billion, six hundred sixty-six million, three hundred four thousand, eight hundred sixty-nine".