3646289 has 2 divisors, whose sum is σ = 3646290. Its totient is φ = 3646288.

The previous prime is 3646261. The next prime is 3646319. The reversal of 3646289 is 9826463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2007889 + 1638400 = 1417^2 + 1280^2 .

It is an emirp because it is prime and its reverse (9826463) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3646289 - 2⁸ = 3646033 is a prime.

It is not a weakly prime, because it can be changed into another prime (3646219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1823144 + 1823145.

It is an arithmetic number, because the mean of its divisors is an integer number (1823145).

Almost surely, 2^3646289 is an apocalyptic number.

It is an amenable number.

3646289 is a deficient number, since it is larger than the sum of its proper divisors (1).

3646289 is an equidigital number, since it uses as much as digits as its factorization.

3646289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 38.

The square root of 3646289 is about 1909.5258573793. The cubic root of 3646289 is about 153.9159742892.

The spelling of 3646289 in words is "three million, six hundred forty-six thousand, two hundred eighty-nine".