224536729 has 2 divisors, whose sum is σ = 224536730. Its totient is φ = 224536728.

The previous prime is 224536717. The next prime is 224536747. The reversal of 224536729 is 927635422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172003225 + 52533504 = 13115^2 + 7248^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224536729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 224536691 and 224536700.

It is not a weakly prime, because it can be changed into another prime (224536759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112268364 + 112268365.

It is an arithmetic number, because the mean of its divisors is an integer number (112268365).

Almost surely, 2^224536729 is an apocalyptic number.

It is an amenable number.

224536729 is a deficient number, since it is larger than the sum of its proper divisors (1).

224536729 is an equidigital number, since it uses as much as digits as its factorization.

224536729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 40.

The square root of 224536729 is about 14984.5496762499. The cubic root of 224536729 is about 607.8024745372.

The spelling of 224536729 in words is "two hundred twenty-four million, five hundred thirty-six thousand, seven hundred twenty-nine".