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223280689 is a prime number
BaseRepresentation
bin11010100111011…
…11111000110001
3120120010211112011
431103233320301
5424124440224
634053402521
75350566052
oct1523577061
9516124464
10223280689
111050440a5
1262939441
1337348a68
1421922729
1514907394
hexd4efe31

223280689 has 2 divisors, whose sum is σ = 223280690. Its totient is φ = 223280688.

The previous prime is 223280683. The next prime is 223280747. The reversal of 223280689 is 986082322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156450064 + 66830625 = 12508^2 + 8175^2 .

It is a cyclic number.

It is not a de Polignac number, because 223280689 - 29 = 223280177 is a prime.

It is a super-3 number, since 3×2232806893 (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (223280683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111640344 + 111640345.

It is an arithmetic number, because the mean of its divisors is an integer number (111640345).

Almost surely, 2223280689 is an apocalyptic number.

It is an amenable number.

223280689 is a deficient number, since it is larger than the sum of its proper divisors (1).

223280689 is an equidigital number, since it uses as much as digits as its factorization.

223280689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 223280689 is about 14942.5797304214. The cubic root of 223280689 is about 606.6670223334.

The spelling of 223280689 in words is "two hundred twenty-three million, two hundred eighty thousand, six hundred eighty-nine".