66247033 has 2 divisors, whose sum is σ = 66247034. Its totient is φ = 66247032.

The previous prime is 66247019. The next prime is 66247067. The reversal of 66247033 is 33074266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57198969 + 9048064 = 7563^2 + 3008^2 .

It is a cyclic number.

It is not a de Polignac number, because 66247033 - 2²⁵ = 32692601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66246986 and 66247004.

It is not a weakly prime, because it can be changed into another prime (66247003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33123516 + 33123517.

It is an arithmetic number, because the mean of its divisors is an integer number (33123517).

Almost surely, 2^66247033 is an apocalyptic number.

It is an amenable number.

66247033 is a deficient number, since it is larger than the sum of its proper divisors (1).

66247033 is an equidigital number, since it uses as much as digits as its factorization.

66247033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 31.

The square root of 66247033 is about 8139.2280346480. The cubic root of 66247033 is about 404.6275761454.

The spelling of 66247033 in words is "sixty-six million, two hundred forty-seven thousand, thirty-three".