218266063 has 2 divisors, whose sum is σ = 218266064. Its totient is φ = 218266062.

The previous prime is 218266051. The next prime is 218266079. The reversal of 218266063 is 360662812.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-218266063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218266163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109133031 + 109133032.

It is an arithmetic number, because the mean of its divisors is an integer number (109133032).

Almost surely, 2^218266063 is an apocalyptic number.

218266063 is a deficient number, since it is larger than the sum of its proper divisors (1).

218266063 is an equidigital number, since it uses as much as digits as its factorization.

218266063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 218266063 is about 14773.8303428732. The cubic root of 218266063 is about 602.0909114992.

It can be divided in two parts, 21826 and 6063, that added together give a square (27889 = 167²).

The spelling of 218266063 in words is "two hundred eighteen million, two hundred sixty-six thousand, sixty-three".