220513663 has 2 divisors, whose sum is σ = 220513664. Its totient is φ = 220513662.

The previous prime is 220513661. The next prime is 220513679. The reversal of 220513663 is 366315022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220513663 - 2¹ = 220513661 is a prime.

Together with 220513661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220513661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110256831 + 110256832.

It is an arithmetic number, because the mean of its divisors is an integer number (110256832).

Almost surely, 2^220513663 is an apocalyptic number.

220513663 is a deficient number, since it is larger than the sum of its proper divisors (1).

220513663 is an equidigital number, since it uses as much as digits as its factorization.

220513663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 220513663 is about 14849.7024549315. The cubic root of 220513663 is about 604.1505397540.

Adding to 220513663 its reverse (366315022), we get a palindrome (586828685).

The spelling of 220513663 in words is "two hundred twenty million, five hundred thirteen thousand, six hundred sixty-three".