66041 has 2 divisors, whose sum is σ = 66042. Its totient is φ = 66040.
The previous prime is 66037. The next prime is 66047. The reversal of 66041 is 14066.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 55225 + 10816 = 235^2 + 104^2 .
It is a cyclic number.
It is not a de Polignac number, because 66041 - 22 = 66037 is a prime.
It is a super-2 number, since 2×660412 = 8722827362, which contains 22 as substring.
It is a Chen prime.
It is a plaindrome in base 11.
It is not a weakly prime, because it can be changed into another prime (66047) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33020 + 33021.
It is an arithmetic number, because the mean of its divisors is an integer number (33021).
266041 is an apocalyptic number.
It is an amenable number.
66041 is a deficient number, since it is larger than the sum of its proper divisors (1).
66041 is an equidigital number, since it uses as much as digits as its factorization.
66041 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 144, while the sum is 17.
The square root of 66041 is about 256.9844353263. The cubic root of 66041 is about 40.4207666983.
The spelling of 66041 in words is "sixty-six thousand, forty-one".
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