220613 has 2 divisors, whose sum is σ = 220614. Its totient is φ = 220612.

The previous prime is 220589. The next prime is 220663. The reversal of 220613 is 316022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187489 + 33124 = 433^2 + 182^2 .

It is a cyclic number.

It is not a de Polignac number, because 220613 - 2⁸ = 220357 is a prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110306 + 110307.

It is an arithmetic number, because the mean of its divisors is an integer number (110307).

2²²⁰⁶¹³ is an apocalyptic number.

It is an amenable number.

220613 is a deficient number, since it is larger than the sum of its proper divisors (1).

220613 is an equidigital number, since it uses as much as digits as its factorization.

220613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 220613 is about 469.6945816166. The cubic root of 220613 is about 60.4241245385.

Adding to 220613 its reverse (316022), we get a palindrome (536635).

The spelling of 220613 in words is "two hundred twenty thousand, six hundred thirteen".