671067217 has 2 divisors, whose sum is σ = 671067218. Its totient is φ = 671067216.

The previous prime is 671067211. The next prime is 671067223. The reversal of 671067217 is 712760176.

It is a balanced prime because it is at equal distance from previous prime (671067211) and next prime (671067223).

It can be written as a sum of positive squares in only one way, i.e., 667498896 + 3568321 = 25836^2 + 1889^2 .

It is a cyclic number.

It is not a de Polignac number, because 671067217 - 2¹¹ = 671065169 is a prime.

It is not a weakly prime, because it can be changed into another prime (671067211) 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, 335533608 + 335533609.

It is an arithmetic number, because the mean of its divisors is an integer number (335533609).

Almost surely, 2^671067217 is an apocalyptic number.

It is an amenable number.

671067217 is a deficient number, since it is larger than the sum of its proper divisors (1).

671067217 is an equidigital number, since it uses as much as digits as its factorization.

671067217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24696, while the sum is 37.

The square root of 671067217 is about 25904.9651032384. The cubic root of 671067217 is about 875.4983683928.

The spelling of 671067217 in words is "six hundred seventy-one million, sixty-seven thousand, two hundred seventeen".