3644213 has 2 divisors, whose sum is σ = 3644214. Its totient is φ = 3644212.

The previous prime is 3644183. The next prime is 3644231. The reversal of 3644213 is 3124463.

It is a happy number.

Together with next prime (3644231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3179089 + 465124 = 1783^2 + 682^2 .

It is a cyclic number.

It is not a de Polignac number, because 3644213 - 2⁶ = 3644149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3644513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822106 + 1822107.

It is an arithmetic number, because the mean of its divisors is an integer number (1822107).

Almost surely, 2^3644213 is an apocalyptic number.

It is an amenable number.

3644213 is a deficient number, since it is larger than the sum of its proper divisors (1).

3644213 is an equidigital number, since it uses as much as digits as its factorization.

3644213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 23.

The square root of 3644213 is about 1908.9821895450. The cubic root of 3644213 is about 153.8867582632.

Adding to 3644213 its reverse (3124463), we get a palindrome (6768676).

The spelling of 3644213 in words is "three million, six hundred forty-four thousand, two hundred thirteen".