3221864 has 16 divisors (see below), whose sum is σ = 6060420. Its totient is φ = 1605760.

The previous prime is 3221819. The next prime is 3221899. The reversal of 3221864 is 4681223.

It can be written as a sum of positive squares in 2 ways, for example, as 2788900 + 432964 = 1670^2 + 658^2 .

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, 3782 + ... + 4554.

Almost surely, 2^3221864 is an apocalyptic number.

It is an amenable number.

3221864 is a deficient number, since it is larger than the sum of its proper divisors (2838556).

3221864 is a wasteful number, since it uses less digits than its factorization.

3221864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300 (or 1296 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 3221864 is about 1794.9551526431. The cubic root of 3221864 is about 147.6961137396.

The spelling of 3221864 in words is "three million, two hundred twenty-one thousand, eight hundred sixty-four".