68643167 has 2 divisors, whose sum is σ = 68643168. Its totient is φ = 68643166.

The previous prime is 68643163. The next prime is 68643221. The reversal of 68643167 is 76134686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68643167 - 2² = 68643163 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68643163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34321583 + 34321584.

It is an arithmetic number, because the mean of its divisors is an integer number (34321584).

Almost surely, 2^68643167 is an apocalyptic number.

68643167 is a deficient number, since it is larger than the sum of its proper divisors (1).

68643167 is an equidigital number, since it uses as much as digits as its factorization.

68643167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 41.

The square root of 68643167 is about 8285.1171989297. The cubic root of 68643167 is about 409.4483300218.

The spelling of 68643167 in words is "sixty-eight million, six hundred forty-three thousand, one hundred sixty-seven".