68071121 has 2 divisors, whose sum is σ = 68071122. Its totient is φ = 68071120.

The previous prime is 68071109. The next prime is 68071139. The reversal of 68071121 is 12117086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57214096 + 10857025 = 7564^2 + 3295^2 .

It is a cyclic number.

It is not a de Polignac number, because 68071121 - 2⁶ = 68071057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68071141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34035560 + 34035561.

It is an arithmetic number, because the mean of its divisors is an integer number (34035561).

Almost surely, 2^68071121 is an apocalyptic number.

It is an amenable number.

68071121 is a deficient number, since it is larger than the sum of its proper divisors (1).

68071121 is an equidigital number, since it uses as much as digits as its factorization.

68071121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 68071121 is about 8250.5224683047. The cubic root of 68071121 is about 408.3077603125.

The spelling of 68071121 in words is "sixty-eight million, seventy-one thousand, one hundred twenty-one".