3565669 has 2 divisors, whose sum is σ = 3565670. Its totient is φ = 3565668.

The previous prime is 3565619. The next prime is 3565687. The reversal of 3565669 is 9665653.

3565669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3560769 + 4900 = 1887^2 + 70^2 .

It is an emirp because it is prime and its reverse (9665653) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3565669 - 2²¹ = 1468517 is a prime.

It is a super-2 number, since 2×3565669² = 25427990835122, which contains 22 as substring.

It is a Chen 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 (3565619) 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, 1782834 + 1782835.

It is an arithmetic number, because the mean of its divisors is an integer number (1782835).

Almost surely, 2^3565669 is an apocalyptic number.

It is an amenable number.

3565669 is a deficient number, since it is larger than the sum of its proper divisors (1).

3565669 is an equidigital number, since it uses as much as digits as its factorization.

3565669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 40.

The square root of 3565669 is about 1888.2979108181. The cubic root of 3565669 is about 152.7731412318.

The spelling of 3565669 in words is "three million, five hundred sixty-five thousand, six hundred sixty-nine".