224563681 has 2 divisors, whose sum is σ = 224563682. Its totient is φ = 224563680.

The previous prime is 224563667. The next prime is 224563709. The reversal of 224563681 is 186365422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224550225 + 13456 = 14985^2 + 116^2 .

It is a cyclic number.

It is not a de Polignac number, because 224563681 - 2¹⁵ = 224530913 is a prime.

It is a super-2 number, since 2×224563681² = 100857693648539522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 224563681.

It is not a weakly prime, because it can be changed into another prime (224563181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112281840 + 112281841.

It is an arithmetic number, because the mean of its divisors is an integer number (112281841).

Almost surely, 2^224563681 is an apocalyptic number.

It is an amenable number.

224563681 is a deficient number, since it is larger than the sum of its proper divisors (1).

224563681 is an equidigital number, since it uses as much as digits as its factorization.

224563681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 37.

The square root of 224563681 is about 14985.4489755896. The cubic root of 224563681 is about 607.8267925140.

The spelling of 224563681 in words is "two hundred twenty-four million, five hundred sixty-three thousand, six hundred eighty-one".