3665237 has 2 divisors, whose sum is σ = 3665238. Its totient is φ = 3665236.

The previous prime is 3665227. The next prime is 3665239. The reversal of 3665237 is 7325663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3556996 + 108241 = 1886^2 + 329^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3665237 is a prime.

Together with 3665239, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3665239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1832618 + 1832619.

It is an arithmetic number, because the mean of its divisors is an integer number (1832619).

Almost surely, 2^3665237 is an apocalyptic number.

It is an amenable number.

3665237 is a deficient number, since it is larger than the sum of its proper divisors (1).

3665237 is an equidigital number, since it uses as much as digits as its factorization.

3665237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 32.

The square root of 3665237 is about 1914.4808695832. The cubic root of 3665237 is about 154.1821227585.

The spelling of 3665237 in words is "three million, six hundred sixty-five thousand, two hundred thirty-seven".