664040011 has 2 divisors, whose sum is σ = 664040012. Its totient is φ = 664040010.

The previous prime is 664039997. The next prime is 664040081. The reversal of 664040011 is 110040466.

664040011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 664040011 - 2⁵ = 664039979 is a prime.

It is not a weakly prime, because it can be changed into another prime (664040081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332020005 + 332020006.

It is an arithmetic number, because the mean of its divisors is an integer number (332020006).

Almost surely, 2^664040011 is an apocalyptic number.

664040011 is a deficient number, since it is larger than the sum of its proper divisors (1).

664040011 is an equidigital number, since it uses as much as digits as its factorization.

664040011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 664040011 is about 25768.9738057223. The cubic root of 664040011 is about 872.4316571127.

Adding to 664040011 its reverse (110040466), we get a palindrome (774080477).

The spelling of 664040011 in words is "six hundred sixty-four million, forty thousand, eleven".