2605769 has 2 divisors, whose sum is σ = 2605770. Its totient is φ = 2605768.

The previous prime is 2605763. The next prime is 2605781. The reversal of 2605769 is 9675062.

2605769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2598544 + 7225 = 1612^2 + 85^2 .

It is a cyclic number.

It is not a de Polignac number, because 2605769 - 2⁴ = 2605753 is a prime.

It is a super-2 number, since 2×2605769² = 13580064162722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2605763) 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, 1302884 + 1302885.

It is an arithmetic number, because the mean of its divisors is an integer number (1302885).

2^2605769 is an apocalyptic number.

It is an amenable number.

2605769 is a deficient number, since it is larger than the sum of its proper divisors (1).

2605769 is an equidigital number, since it uses as much as digits as its factorization.

2605769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 2605769 is about 1614.2394494002. The cubic root of 2605769 is about 137.6085137884.

The spelling of 2605769 in words is "two million, six hundred five thousand, seven hundred sixty-nine".