3220733 has 4 divisors (see below), whose sum is σ = 3244380. Its totient is φ = 3197088.

The previous prime is 3220727. The next prime is 3220771. The reversal of 3220733 is 3370223.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3370223 = 647 ⋅5209.

It can be written as a sum of positive squares in 2 ways, for example, as 2699449 + 521284 = 1643^2 + 722^2 .

It is a cyclic number.

It is not a de Polignac number, because 3220733 - 2⁶ = 3220669 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220703) 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, 11618 + ... + 11891.

It is an arithmetic number, because the mean of its divisors is an integer number (811095).

Almost surely, 2^3220733 is an apocalyptic number.

It is an amenable number.

3220733 is a deficient number, since it is larger than the sum of its proper divisors (23647).

3220733 is a wasteful number, since it uses less digits than its factorization.

3220733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23646.

The product of its (nonzero) digits is 756, while the sum is 20.

The square root of 3220733 is about 1794.6400753354. The cubic root of 3220733 is about 147.6788293503.

Adding to 3220733 its reverse (3370223), we get a palindrome (6590956).

The spelling of 3220733 in words is "three million, two hundred twenty thousand, seven hundred thirty-three".