66355337 has 2 divisors, whose sum is σ = 66355338. Its totient is φ = 66355336.

The previous prime is 66355327. The next prime is 66355349. The reversal of 66355337 is 73355366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59151481 + 7203856 = 7691^2 + 2684^2 .

It is a cyclic number.

It is not a de Polignac number, because 66355337 - 2¹⁰ = 66354313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66355337.

It is not a weakly prime, because it can be changed into another prime (66355307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33177668 + 33177669.

It is an arithmetic number, because the mean of its divisors is an integer number (33177669).

Almost surely, 2^66355337 is an apocalyptic number.

It is an amenable number.

66355337 is a deficient number, since it is larger than the sum of its proper divisors (1).

66355337 is an equidigital number, since it uses as much as digits as its factorization.

66355337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 170100, while the sum is 38.

The square root of 66355337 is about 8145.8785284339. The cubic root of 66355337 is about 404.8479579670.

The spelling of 66355337 in words is "sixty-six million, three hundred fifty-five thousand, three hundred thirty-seven".