667071101 has 2 divisors, whose sum is σ = 667071102. Its totient is φ = 667071100.

The previous prime is 667070983. The next prime is 667071121. The reversal of 667071101 is 101170766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 531348601 + 135722500 = 23051^2 + 11650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667071101 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667071121) 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, 333535550 + 333535551.

It is an arithmetic number, because the mean of its divisors is an integer number (333535551).

Almost surely, 2^667071101 is an apocalyptic number.

It is an amenable number.

667071101 is a deficient number, since it is larger than the sum of its proper divisors (1).

667071101 is an equidigital number, since it uses as much as digits as its factorization.

667071101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 667071101 is about 25827.7196244655. The cubic root of 667071101 is about 873.7570819925.

The spelling of 667071101 in words is "six hundred sixty-seven million, seventy-one thousand, one hundred one".