68941109 has 2 divisors, whose sum is σ = 68941110. Its totient is φ = 68941108.

The previous prime is 68941079. The next prime is 68941121. The reversal of 68941109 is 90114986.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42706225 + 26234884 = 6535^2 + 5122^2 .

It is a cyclic number.

It is not a de Polignac number, because 68941109 - 2⁸ = 68940853 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 (68941129) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34470554 + 34470555.

It is an arithmetic number, because the mean of its divisors is an integer number (34470555).

Almost surely, 2^68941109 is an apocalyptic number.

It is an amenable number.

68941109 is a deficient number, since it is larger than the sum of its proper divisors (1).

68941109 is an equidigital number, since it uses as much as digits as its factorization.

68941109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 68941109 is about 8303.0782845882. The cubic root of 68941109 is about 410.0398711969.

It can be divided in two parts, 689 and 41109, that multiplied together give a triangular number (28324101 = T₇₅₂₆).

The spelling of 68941109 in words is "sixty-eight million, nine hundred forty-one thousand, one hundred nine".