3213644 has 12 divisors (see below), whose sum is σ = 6427344. Its totient is φ = 1377264.

The previous prime is 3213619. The next prime is 3213659. The reversal of 3213644 is 4463123.

It is a happy number.

3213644 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57359 + ... + 57414.

It is an arithmetic number, because the mean of its divisors is an integer number (535612).

Almost surely, 2^3213644 is an apocalyptic number.

It is an amenable number.

3213644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3213644 is a wasteful number, since it uses less digits than its factorization.

3213644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114784 (or 114782 counting only the distinct ones).

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

The square root of 3213644 is about 1792.6639395046. The cubic root of 3213644 is about 147.5704001768.

Adding to 3213644 its reverse (4463123), we get a palindrome (7676767).

The spelling of 3213644 in words is "three million, two hundred thirteen thousand, six hundred forty-four".