2065309 has 2 divisors, whose sum is σ = 2065310. Its totient is φ = 2065308.

The previous prime is 2065267. The next prime is 2065363. The reversal of 2065309 is 9035602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2059225 + 6084 = 1435^2 + 78^2 .

It is a cyclic number.

It is not a de Polignac number, because 2065309 - 2⁷ = 2065181 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2065369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032654 + 1032655.

It is an arithmetic number, because the mean of its divisors is an integer number (1032655).

2^2065309 is an apocalyptic number.

It is an amenable number.

2065309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2065309 is an equidigital number, since it uses as much as digits as its factorization.

2065309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 2065309 is about 1437.1182971488. The cubic root of 2065309 is about 127.3488456076.

The spelling of 2065309 in words is "two million, sixty-five thousand, three hundred nine".