326640011 has 2 divisors, whose sum is σ = 326640012. Its totient is φ = 326640010.

The previous prime is 326639983. The next prime is 326640037. The reversal of 326640011 is 110046623.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 326640011 - 2¹⁰ = 326638987 is a prime.

It is not a weakly prime, because it can be changed into another prime (326640511) 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, 163320005 + 163320006.

It is an arithmetic number, because the mean of its divisors is an integer number (163320006).

Almost surely, 2^326640011 is an apocalyptic number.

326640011 is a deficient number, since it is larger than the sum of its proper divisors (1).

326640011 is an equidigital number, since it uses as much as digits as its factorization.

326640011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 326640011 is about 18073.1848604500. The cubic root of 326640011 is about 688.6889696395.

Adding to 326640011 its reverse (110046623), we get a palindrome (436686634).

The spelling of 326640011 in words is "three hundred twenty-six million, six hundred forty thousand, eleven".