3643213 has 16 divisors (see below), whose sum is σ = 4366336. Its totient is φ = 2974320.

The previous prime is 3643201. The next prime is 3643217. The reversal of 3643213 is 3123463.

It is a cyclic number.

It is not a de Polignac number, because 3643213 - 2⁵ = 3643181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3643217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22270 + ... + 22432.

It is an arithmetic number, because the mean of its divisors is an integer number (272896).

Almost surely, 2^3643213 is an apocalyptic number.

It is an amenable number.

3643213 is a deficient number, since it is larger than the sum of its proper divisors (723123).

3643213 is a wasteful number, since it uses less digits than its factorization.

3643213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304.

The product of its digits is 1296, while the sum is 22.

The square root of 3643213 is about 1908.7202518965. The cubic root of 3643213 is about 153.8726810732.

Adding to 3643213 its reverse (3123463), we get a palindrome (6766676).

The spelling of 3643213 in words is "three million, six hundred forty-three thousand, two hundred thirteen".