68159843 has 2 divisors, whose sum is σ = 68159844. Its totient is φ = 68159842.

The previous prime is 68159827. The next prime is 68159873. The reversal of 68159843 is 34895186.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68159843 - 2⁴ = 68159827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68159794 and 68159803.

It is not a weakly prime, because it can be changed into another prime (68159813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34079921 + 34079922.

It is an arithmetic number, because the mean of its divisors is an integer number (34079922).

Almost surely, 2^68159843 is an apocalyptic number.

68159843 is a deficient number, since it is larger than the sum of its proper divisors (1).

68159843 is an equidigital number, since it uses as much as digits as its factorization.

68159843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 44.

The square root of 68159843 is about 8255.8974678711. The cubic root of 68159843 is about 408.4850756133.

The spelling of 68159843 in words is "sixty-eight million, one hundred fifty-nine thousand, eight hundred forty-three".