2040664069 has 2 divisors, whose sum is σ = 2040664070. Its totient is φ = 2040664068.

The previous prime is 2040664057. The next prime is 2040664079. The reversal of 2040664069 is 9604660402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1596002500 + 444661569 = 39950^2 + 21087^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2040664069 is a prime.

It is a super-2 number, since 2×2040664069² = 8328619685015273522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2040664009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020332034 + 1020332035.

It is an arithmetic number, because the mean of its divisors is an integer number (1020332035).

Almost surely, 2^2040664069 is an apocalyptic number.

It is an amenable number.

2040664069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2040664069 is an equidigital number, since it uses as much as digits as its factorization.

2040664069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 2040664069 is about 45173.7099317734. The cubic root of 2040664069 is about 1268.4027430694.

The spelling of 2040664069 in words is "two billion, forty million, six hundred sixty-four thousand, sixty-nine".