66333037 has 2 divisors, whose sum is σ = 66333038. Its totient is φ = 66333036.

The previous prime is 66333017. The next prime is 66333073. The reversal of 66333037 is 73033366.

Together with next prime (66333073) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36072036 + 30261001 = 6006^2 + 5501^2 .

It is a cyclic number.

It is not a de Polignac number, because 66333037 - 2⁷ = 66332909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66333017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33166518 + 33166519.

It is an arithmetic number, because the mean of its divisors is an integer number (33166519).

Almost surely, 2^66333037 is an apocalyptic number.

It is an amenable number.

66333037 is a deficient number, since it is larger than the sum of its proper divisors (1).

66333037 is an equidigital number, since it uses as much as digits as its factorization.

66333037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 31.

The square root of 66333037 is about 8144.5096230528. The cubic root of 66333037 is about 404.8026005453.

The spelling of 66333037 in words is "sixty-six million, three hundred thirty-three thousand, thirty-seven".