3228661 has 2 divisors, whose sum is σ = 3228662. Its totient is φ = 3228660.

The previous prime is 3228593. The next prime is 3228683. The reversal of 3228661 is 1668223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3186225 + 42436 = 1785^2 + 206^2 .

It is a cyclic number.

It is not a de Polignac number, because 3228661 - 2⁹ = 3228149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3228161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1614330 + 1614331.

It is an arithmetic number, because the mean of its divisors is an integer number (1614331).

Almost surely, 2^3228661 is an apocalyptic number.

It is an amenable number.

3228661 is a deficient number, since it is larger than the sum of its proper divisors (1).

3228661 is an equidigital number, since it uses as much as digits as its factorization.

3228661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

The square root of 3228661 is about 1796.8475171811. The cubic root of 3228661 is about 147.7999030739.

The spelling of 3228661 in words is "three million, two hundred twenty-eight thousand, six hundred sixty-one".