220663 has 2 divisors, whose sum is σ = 220664. Its totient is φ = 220662.

The previous prime is 220613. The next prime is 220667. The reversal of 220663 is 366022.

220663 is an esthetic number in base 8, because in such base its adjacent digits differ by 1.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220663 - 2⁹ = 220151 is a prime.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 220663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110331 + 110332.

It is an arithmetic number, because the mean of its divisors is an integer number (110332).

2²²⁰⁶⁶³ is an apocalyptic number.

220663 is a deficient number, since it is larger than the sum of its proper divisors (1).

220663 is an equidigital number, since it uses as much as digits as its factorization.

220663 is an evil number, because the sum of its binary digits is even.

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

The square root of 220663 is about 469.7478046782. The cubic root of 220663 is about 60.4286890595.

Adding to 220663 its reverse (366022), we get a palindrome (586685).

The spelling of 220663 in words is "two hundred twenty thousand, six hundred sixty-three".