2065669 has 2 divisors, whose sum is σ = 2065670. Its totient is φ = 2065668.

The previous prime is 2065667. The next prime is 2065711. The reversal of 2065669 is 9665602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1232100 + 833569 = 1110^2 + 913^2 .

It is a cyclic number.

It is not a de Polignac number, because 2065669 - 2¹ = 2065667 is a prime.

It is a super-2 number, since 2×2065669² = 8533976835122, which contains 22 as substring.

Together with 2065667, it forms a pair of twin primes.

2065669 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2065663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032834 + 1032835.

It is an arithmetic number, because the mean of its divisors is an integer number (1032835).

2^2065669 is an apocalyptic number.

It is an amenable number.

2065669 is a deficient number, since it is larger than the sum of its proper divisors (1).

2065669 is an equidigital number, since it uses as much as digits as its factorization.

2065669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 2065669 is about 1437.2435423407. The cubic root of 2065669 is about 127.3562444877.

The spelling of 2065669 in words is "two million, sixty-five thousand, six hundred sixty-nine".