64635133 has 2 divisors, whose sum is σ = 64635134. Its totient is φ = 64635132.

The previous prime is 64635119. The next prime is 64635163. The reversal of 64635133 is 33153646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51868804 + 12766329 = 7202^2 + 3573^2 .

It is a cyclic number.

It is not a de Polignac number, because 64635133 - 2⁹ = 64634621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64635095 and 64635104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64635163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32317566 + 32317567.

It is an arithmetic number, because the mean of its divisors is an integer number (32317567).

Almost surely, 2^64635133 is an apocalyptic number.

It is an amenable number.

64635133 is a deficient number, since it is larger than the sum of its proper divisors (1).

64635133 is an equidigital number, since it uses as much as digits as its factorization.

64635133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 31.

The square root of 64635133 is about 8039.5978133237. The cubic root of 64635133 is about 401.3188406196.

Adding to 64635133 its reverse (33153646), we get a palindrome (97788779).

The spelling of 64635133 in words is "sixty-four million, six hundred thirty-five thousand, one hundred thirty-three".