68378171 has 2 divisors, whose sum is σ = 68378172. Its totient is φ = 68378170.

The previous prime is 68378153. The next prime is 68378239. The reversal of 68378171 is 17187386.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68378171 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68375171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34189085 + 34189086.

It is an arithmetic number, because the mean of its divisors is an integer number (34189086).

Almost surely, 2^68378171 is an apocalyptic number.

68378171 is a deficient number, since it is larger than the sum of its proper divisors (1).

68378171 is an equidigital number, since it uses as much as digits as its factorization.

68378171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 41.

The square root of 68378171 is about 8269.1094441905. The cubic root of 68378171 is about 408.9207606688.

The spelling of 68378171 in words is "sixty-eight million, three hundred seventy-eight thousand, one hundred seventy-one".