66006047 has 2 divisors, whose sum is σ = 66006048. Its totient is φ = 66006046.

The previous prime is 66006013. The next prime is 66006079. The reversal of 66006047 is 74060066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66006047 - 2²⁰ = 64957471 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66006547) 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, 33003023 + 33003024.

It is an arithmetic number, because the mean of its divisors is an integer number (33003024).

Almost surely, 2^66006047 is an apocalyptic number.

66006047 is a deficient number, since it is larger than the sum of its proper divisors (1).

66006047 is an equidigital number, since it uses as much as digits as its factorization.

66006047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 66006047 is about 8124.4105632347. The cubic root of 66006047 is about 404.1363437956.

The spelling of 66006047 in words is "sixty-six million, six thousand, forty-seven".