3220623 has 36 divisors (see below), whose sum is σ = 5542680. Its totient is φ = 1796256.

The previous prime is 3220619. The next prime is 3220627. The reversal of 3220623 is 3260223.

It is an interprime number because it is at equal distance from previous prime (3220619) and next prime (3220627).

It is not a de Polignac number, because 3220623 - 2² = 3220619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3220596 and 3220605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220627) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 29493 + ... + 29601.

Almost surely, 2^3220623 is an apocalyptic number.

3220623 is a deficient number, since it is larger than the sum of its proper divisors (2322057).

3220623 is a wasteful number, since it uses less digits than its factorization.

3220623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 3220623 is about 1794.6094282601. The cubic root of 3220623 is about 147.6771480709.

Adding to 3220623 its reverse (3260223), we get a palindrome (6480846).

The spelling of 3220623 in words is "three million, two hundred twenty thousand, six hundred twenty-three".