67066771 has 2 divisors, whose sum is σ = 67066772. Its totient is φ = 67066770.

The previous prime is 67066757. The next prime is 67066777. The reversal of 67066771 is 17766076.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67066771 - 2¹⁷ = 66935699 is a prime.

It is not a weakly prime, because it can be changed into another prime (67066777) 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, 33533385 + 33533386.

It is an arithmetic number, because the mean of its divisors is an integer number (33533386).

Almost surely, 2^67066771 is an apocalyptic number.

67066771 is a deficient number, since it is larger than the sum of its proper divisors (1).

67066771 is an equidigital number, since it uses as much as digits as its factorization.

67066771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 67066771 is about 8189.4304441762. The cubic root of 67066771 is about 406.2896874521.

The spelling of 67066771 in words is "sixty-seven million, sixty-six thousand, seven hundred seventy-one".