66041023 has 2 divisors, whose sum is σ = 66041024. Its totient is φ = 66041022.

The previous prime is 66041009. The next prime is 66041057. The reversal of 66041023 is 32014066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66041023 - 2²¹ = 63943871 is a prime.

It is a super-2 number, since 2×66041023² = 8722833437773058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66040985 and 66041003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66041083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33020511 + 33020512.

It is an arithmetic number, because the mean of its divisors is an integer number (33020512).

Almost surely, 2^66041023 is an apocalyptic number.

66041023 is a deficient number, since it is larger than the sum of its proper divisors (1).

66041023 is an equidigital number, since it uses as much as digits as its factorization.

66041023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 66041023 is about 8126.5628035474. The cubic root of 66041023 is about 404.2077139072.

Adding to 66041023 its reverse (32014066), we get a palindrome (98055089).

The spelling of 66041023 in words is "sixty-six million, forty-one thousand, twenty-three".