66743011 has 2 divisors, whose sum is σ = 66743012. Its totient is φ = 66743010.

The previous prime is 66742997. The next prime is 66743041. The reversal of 66743011 is 11034766.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66743011 - 2⁵ = 66742979 is a prime.

It is a super-2 number, since 2×66743011² = 8909259034692242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66743041) 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, 33371505 + 33371506.

It is an arithmetic number, because the mean of its divisors is an integer number (33371506).

Almost surely, 2^66743011 is an apocalyptic number.

66743011 is a deficient number, since it is larger than the sum of its proper divisors (1).

66743011 is an equidigital number, since it uses as much as digits as its factorization.

66743011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 66743011 is about 8169.6395881336. The cubic root of 66743011 is about 405.6348545449.

Adding to 66743011 its reverse (11034766), we get a palindrome (77777777).

The spelling of 66743011 in words is "sixty-six million, seven hundred forty-three thousand, eleven".