32220613 has 2 divisors, whose sum is σ = 32220614. Its totient is φ = 32220612.

The previous prime is 32220583. The next prime is 32220623. The reversal of 32220613 is 31602223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18515809 + 13704804 = 4303^2 + 3702^2 .

It is a cyclic number.

It is not a de Polignac number, because 32220613 - 2¹³ = 32212421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32220623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16110306 + 16110307.

It is an arithmetic number, because the mean of its divisors is an integer number (16110307).

Almost surely, 2^32220613 is an apocalyptic number.

It is an amenable number.

32220613 is a deficient number, since it is larger than the sum of its proper divisors (1).

32220613 is an equidigital number, since it uses as much as digits as its factorization.

32220613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 32220613 is about 5676.3203750317. The cubic root of 32220613 is about 318.2081262180.

Adding to 32220613 its reverse (31602223), we get a palindrome (63822836).

The spelling of 32220613 in words is "thirty-two million, two hundred twenty thousand, six hundred thirteen".