64166533 has 2 divisors, whose sum is σ = 64166534. Its totient is φ = 64166532.

The previous prime is 64166521. The next prime is 64166549. The reversal of 64166533 is 33566146.

64166533 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 can be written as a sum of positive squares in only one way, i.e., 63728289 + 438244 = 7983^2 + 662^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64166533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64166513) 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, 32083266 + 32083267.

It is an arithmetic number, because the mean of its divisors is an integer number (32083267).

Almost surely, 2^64166533 is an apocalyptic number.

It is an amenable number.

64166533 is a deficient number, since it is larger than the sum of its proper divisors (1).

64166533 is an equidigital number, since it uses as much as digits as its factorization.

64166533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 34.

The square root of 64166533 is about 8010.4015504842. The cubic root of 64166533 is about 400.3466432593.

The spelling of 64166533 in words is "sixty-four million, one hundred sixty-six thousand, five hundred thirty-three".