3664213 has 4 divisors (see below), whose sum is σ = 4187680. Its totient is φ = 3140748.

The previous prime is 3664189. The next prime is 3664247. The reversal of 3664213 is 3124663.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3124663 = 29 ⋅107747.

It is a cyclic number.

It is not a de Polignac number, because 3664213 - 2¹⁷ = 3533141 is a prime.

It is an Ulam number.

3664213 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3664273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261723 + ... + 261736.

It is an arithmetic number, because the mean of its divisors is an integer number (1046920).

Almost surely, 2^3664213 is an apocalyptic number.

It is an amenable number.

3664213 is a deficient number, since it is larger than the sum of its proper divisors (523467).

3664213 is an equidigital number, since it uses as much as digits as its factorization.

3664213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523466.

The product of its digits is 2592, while the sum is 25.

The square root of 3664213 is about 1914.2134154791. The cubic root of 3664213 is about 154.1677628686.

Adding to 3664213 its reverse (3124663), we get a palindrome (6788876).

The spelling of 3664213 in words is "three million, six hundred sixty-four thousand, two hundred thirteen".