223585729 has 2 divisors, whose sum is σ = 223585730. Its totient is φ = 223585728.

The previous prime is 223585723. The next prime is 223585759. The reversal of 223585729 is 927585322.

223585729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162511504 + 61074225 = 12748^2 + 7815^2 .

It is a cyclic number.

It is not a de Polignac number, because 223585729 - 2⁵ = 223585697 is a prime.

It is a super-2 number, since 2×223585729² = 99981156424922882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (223585723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111792864 + 111792865.

It is an arithmetic number, because the mean of its divisors is an integer number (111792865).

Almost surely, 2^223585729 is an apocalyptic number.

It is an amenable number.

223585729 is a deficient number, since it is larger than the sum of its proper divisors (1).

223585729 is an equidigital number, since it uses as much as digits as its factorization.

223585729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 43.

The square root of 223585729 is about 14952.7833195028. The cubic root of 223585729 is about 606.9431672755.

The spelling of 223585729 in words is "two hundred twenty-three million, five hundred eighty-five thousand, seven hundred twenty-nine".