66706127 has 2 divisors, whose sum is σ = 66706128. Its totient is φ = 66706126.

The previous prime is 66706121. The next prime is 66706163. The reversal of 66706127 is 72160766.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66706127 - 2⁴ = 66706111 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 (66706121) 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, 33353063 + 33353064.

It is an arithmetic number, because the mean of its divisors is an integer number (33353064).

Almost surely, 2^66706127 is an apocalyptic number.

66706127 is a deficient number, since it is larger than the sum of its proper divisors (1).

66706127 is an equidigital number, since it uses as much as digits as its factorization.

66706127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 66706127 is about 8167.3818938507. The cubic root of 66706127 is about 405.5601191650.

The spelling of 66706127 in words is "sixty-six million, seven hundred six thousand, one hundred twenty-seven".