67108109 has 2 divisors, whose sum is σ = 67108110. Its totient is φ = 67108108.

The previous prime is 67108081. The next prime is 67108127. The reversal of 67108109 is 90180176.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57805609 + 9302500 = 7603^2 + 3050^2 .

It is a cyclic number.

It is not a de Polignac number, because 67108109 - 2²⁰ = 66059533 is a prime.

It is a Sophie Germain 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 (67108199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33554054 + 33554055.

It is an arithmetic number, because the mean of its divisors is an integer number (33554055).

Almost surely, 2^67108109 is an apocalyptic number.

It is an amenable number.

67108109 is a deficient number, since it is larger than the sum of its proper divisors (1).

67108109 is an equidigital number, since it uses as much as digits as its factorization.

67108109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 67108109 is about 8191.9539183274. The cubic root of 67108109 is about 406.3731453421.

The spelling of 67108109 in words is "sixty-seven million, one hundred eight thousand, one hundred nine".