664133 has 2 divisors, whose sum is σ = 664134. Its totient is φ = 664132.

The previous prime is 664123. The next prime is 664141. The reversal of 664133 is 331466.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 550564 + 113569 = 742^2 + 337^2 .

It is a cyclic number.

It is not a de Polignac number, because 664133 - 2⁴ = 664117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 664099 and 664108.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 664133.

It is not a weakly prime, because it can be changed into another prime (664123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332066 + 332067.

It is an arithmetic number, because the mean of its divisors is an integer number (332067).

2⁶⁶⁴¹³³ is an apocalyptic number.

It is an amenable number.

664133 is a deficient number, since it is larger than the sum of its proper divisors (1).

664133 is an equidigital number, since it uses as much as digits as its factorization.

664133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 23.

The square root of 664133 is about 814.9435563277. The cubic root of 664133 is about 87.2472378936.

Adding to 664133 its reverse (331466), we get a palindrome (995599).

It can be divided in two parts, 664 and 133, that added together give a palindrome (797).

The spelling of 664133 in words is "six hundred sixty-four thousand, one hundred thirty-three".