66324733 has 2 divisors, whose sum is σ = 66324734. Its totient is φ = 66324732.

The previous prime is 66324703. The next prime is 66324743. The reversal of 66324733 is 33742366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65318724 + 1006009 = 8082^2 + 1003^2 .

It is a cyclic number.

It is not a de Polignac number, because 66324733 - 2²⁵ = 32770301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66324703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33162366 + 33162367.

It is an arithmetic number, because the mean of its divisors is an integer number (33162367).

Almost surely, 2^66324733 is an apocalyptic number.

It is an amenable number.

66324733 is a deficient number, since it is larger than the sum of its proper divisors (1).

66324733 is an equidigital number, since it uses as much as digits as its factorization.

66324733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 34.

The square root of 66324733 is about 8143.9998158153. Note that the first 3 decimals coincide. The cubic root of 66324733 is about 404.7857079016.

The spelling of 66324733 in words is "sixty-six million, three hundred twenty-four thousand, seven hundred thirty-three".