68028161 has 2 divisors, whose sum is σ = 68028162. Its totient is φ = 68028160.

The previous prime is 68028131. The next prime is 68028173. The reversal of 68028161 is 16182086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39137536 + 28890625 = 6256^2 + 5375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68028161 is a prime.

It is not a weakly prime, because it can be changed into another prime (68028131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34014080 + 34014081.

It is an arithmetic number, because the mean of its divisors is an integer number (34014081).

Almost surely, 2^68028161 is an apocalyptic number.

It is an amenable number.

68028161 is a deficient number, since it is larger than the sum of its proper divisors (1).

68028161 is an equidigital number, since it uses as much as digits as its factorization.

68028161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 68028161 is about 8247.9185859221. The cubic root of 68028161 is about 408.2218472632.

The spelling of 68028161 in words is "sixty-eight million, twenty-eight thousand, one hundred sixty-one".