243673 has 2 divisors, whose sum is σ = 243674. Its totient is φ = 243672.
The previous prime is 243671. The next prime is 243701. The reversal of 243673 is 376342.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 219024 + 24649 = 468^2 + 157^2 .
It is a cyclic number.
It is not a de Polignac number, because 243673 - 21 = 243671 is a prime.
Together with 243671, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (243671) 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, 121836 + 121837.
It is an arithmetic number, because the mean of its divisors is an integer number (121837).
2243673 is an apocalyptic number.
It is an amenable number.
243673 is a deficient number, since it is larger than the sum of its proper divisors (1).
243673 is an equidigital number, since it uses as much as digits as its factorization.
243673 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 3024, while the sum is 25.
The square root of 243673 is about 493.6324543626. The cubic root of 243673 is about 62.4600704956.
The spelling of 243673 in words is "two hundred forty-three thousand, six hundred seventy-three".
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