223061681 has 2 divisors, whose sum is σ = 223061682. Its totient is φ = 223061680.

The previous prime is 223061669. The next prime is 223061711. The reversal of 223061681 is 186160322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150896656 + 72165025 = 12284^2 + 8495^2 .

It is a cyclic number.

It is not a de Polignac number, because 223061681 - 2⁶ = 223061617 is a prime.

It is a super-2 number, since 2×223061681² = 99513027061091522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (223061611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111530840 + 111530841.

It is an arithmetic number, because the mean of its divisors is an integer number (111530841).

Almost surely, 2^223061681 is an apocalyptic number.

It is an amenable number.

223061681 is a deficient number, since it is larger than the sum of its proper divisors (1).

223061681 is an equidigital number, since it uses as much as digits as its factorization.

223061681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 223061681 is about 14935.2496129124. The cubic root of 223061681 is about 606.4686048223.

The spelling of 223061681 in words is "two hundred twenty-three million, sixty-one thousand, six hundred eighty-one".