3665443 has 2 divisors, whose sum is σ = 3665444. Its totient is φ = 3665442.

The previous prime is 3665437. The next prime is 3665477. The reversal of 3665443 is 3445663.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3665443 - 2¹⁷ = 3534371 is a prime.

It is not a weakly prime, because it can be changed into another prime (3665413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1832721 + 1832722.

It is an arithmetic number, because the mean of its divisors is an integer number (1832722).

Almost surely, 2^3665443 is an apocalyptic number.

3665443 is a deficient number, since it is larger than the sum of its proper divisors (1).

3665443 is an equidigital number, since it uses as much as digits as its factorization.

3665443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 31.

The square root of 3665443 is about 1914.5346693126. The cubic root of 3665443 is about 154.1850112413.

The spelling of 3665443 in words is "three million, six hundred sixty-five thousand, four hundred forty-three".