3695509 has 2 divisors, whose sum is σ = 3695510. Its totient is φ = 3695508.

The previous prime is 3695507. The next prime is 3695513. The reversal of 3695509 is 9055963.

3695509 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., 2739025 + 956484 = 1655^2 + 978^2 .

It is a cyclic number.

It is not a de Polignac number, because 3695509 - 2¹ = 3695507 is a prime.

Together with 3695507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3695501) 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, 1847754 + 1847755.

It is an arithmetic number, because the mean of its divisors is an integer number (1847755).

Almost surely, 2^3695509 is an apocalyptic number.

It is an amenable number.

3695509 is a deficient number, since it is larger than the sum of its proper divisors (1).

3695509 is an equidigital number, since it uses as much as digits as its factorization.

3695509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36450, while the sum is 37.

The square root of 3695509 is about 1922.3706718529. The cubic root of 3695509 is about 154.6054341896.

The spelling of 3695509 in words is "three million, six hundred ninety-five thousand, five hundred nine".