2660665229 has 2 divisors, whose sum is σ = 2660665230. Its totient is φ = 2660665228.

The previous prime is 2660665201. The next prime is 2660665333. The reversal of 2660665229 is 9225660662.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2371495204 + 289170025 = 48698^2 + 17005^2 .

It is a cyclic number.

It is not a de Polignac number, because 2660665229 - 2⁸ = 2660664973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2660665229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2660665729) 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, 1330332614 + 1330332615.

It is an arithmetic number, because the mean of its divisors is an integer number (1330332615).

Almost surely, 2^2660665229 is an apocalyptic number.

It is an amenable number.

2660665229 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660665229 is an equidigital number, since it uses as much as digits as its factorization.

2660665229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 2660665229 is about 51581.6365482911. The cubic root of 2660665229 is about 1385.6814762017.

The spelling of 2660665229 in words is "two billion, six hundred sixty million, six hundred sixty-five thousand, two hundred twenty-nine".