2666290969 has 2 divisors, whose sum is σ = 2666290970. Its totient is φ = 2666290968.

The previous prime is 2666290951. The next prime is 2666291053. The reversal of 2666290969 is 9690926662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2051002944 + 615288025 = 45288^2 + 24805^2 .

It is a cyclic number.

It is not a de Polignac number, because 2666290969 - 2⁹ = 2666290457 is a prime.

It is a super-2 number, since 2×2666290969² = 14218215062741917922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2666290069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333145484 + 1333145485.

It is an arithmetic number, because the mean of its divisors is an integer number (1333145485).

Almost surely, 2^2666290969 is an apocalyptic number.

It is an amenable number.

2666290969 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666290969 is an equidigital number, since it uses as much as digits as its factorization.

2666290969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3779136, while the sum is 55.

The square root of 2666290969 is about 51636.1401442827. The cubic root of 2666290969 is about 1386.6574220895.

The spelling of 2666290969 in words is "two billion, six hundred sixty-six million, two hundred ninety thousand, nine hundred sixty-nine".