66369733 has 2 divisors, whose sum is σ = 66369734. Its totient is φ = 66369732.

The previous prime is 66369707. The next prime is 66369739. The reversal of 66369733 is 33796366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39350529 + 27019204 = 6273^2 + 5198^2 .

It is a cyclic number.

It is not a de Polignac number, because 66369733 - 2²¹ = 64272581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66369733.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66369739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33184866 + 33184867.

It is an arithmetic number, because the mean of its divisors is an integer number (33184867).

Almost surely, 2^66369733 is an apocalyptic number.

It is an amenable number.

66369733 is a deficient number, since it is larger than the sum of its proper divisors (1).

66369733 is an equidigital number, since it uses as much as digits as its factorization.

66369733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 43.

The square root of 66369733 is about 8146.7621175532. The cubic root of 66369733 is about 404.8772335312.

The spelling of 66369733 in words is "sixty-six million, three hundred sixty-nine thousand, seven hundred thirty-three".