66047039 has 2 divisors, whose sum is σ = 66047040. Its totient is φ = 66047038.

The previous prime is 66047027. The next prime is 66047041. The reversal of 66047039 is 93074066.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66047039 is a prime.

It is a super-3 number, since 3×66047039³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 66047041, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66047339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33023519 + 33023520.

It is an arithmetic number, because the mean of its divisors is an integer number (33023520).

Almost surely, 2^66047039 is an apocalyptic number.

66047039 is a deficient number, since it is larger than the sum of its proper divisors (1).

66047039 is an equidigital number, since it uses as much as digits as its factorization.

66047039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 66047039 is about 8126.9329393074. The cubic root of 66047039 is about 404.2199872875.

The spelling of 66047039 in words is "sixty-six million, forty-seven thousand, thirty-nine".