3665329 has 2 divisors, whose sum is σ = 3665330. Its totient is φ = 3665328.

The previous prime is 3665327. The next prime is 3665357. The reversal of 3665329 is 9235663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1904400 + 1760929 = 1380^2 + 1327^2 .

It is an emirp because it is prime and its reverse (9235663) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3665329 - 2¹ = 3665327 is a prime.

Together with 3665327, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 3665294 and 3665303.

It is not a weakly prime, because it can be changed into another prime (3665327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1832664 + 1832665.

It is an arithmetic number, because the mean of its divisors is an integer number (1832665).

Almost surely, 2^3665329 is an apocalyptic number.

It is an amenable number.

3665329 is a deficient number, since it is larger than the sum of its proper divisors (1).

3665329 is an equidigital number, since it uses as much as digits as its factorization.

3665329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 34.

The square root of 3665329 is about 1914.5048968336. The cubic root of 3665329 is about 154.1834127739.

The spelling of 3665329 in words is "three million, six hundred sixty-five thousand, three hundred twenty-nine".