664013033 has 2 divisors, whose sum is σ = 664013034. Its totient is φ = 664013032.

The previous prime is 664013017. The next prime is 664013041. The reversal of 664013033 is 330310466.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 417303184 + 246709849 = 20428^2 + 15707^2 .

It is a cyclic number.

It is not a de Polignac number, because 664013033 - 2⁴ = 664013017 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 664012993 and 664013011.

It is not a weakly prime, because it can be changed into another prime (664013633) 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, 332006516 + 332006517.

It is an arithmetic number, because the mean of its divisors is an integer number (332006517).

Almost surely, 2^664013033 is an apocalyptic number.

It is an amenable number.

664013033 is a deficient number, since it is larger than the sum of its proper divisors (1).

664013033 is an equidigital number, since it uses as much as digits as its factorization.

664013033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 664013033 is about 25768.4503414544. The cubic root of 664013033 is about 872.4198421720.

Adding to 664013033 its reverse (330310466), we get a palindrome (994323499).

The spelling of 664013033 in words is "six hundred sixty-four million, thirteen thousand, thirty-three".