68078243 has 2 divisors, whose sum is σ = 68078244. Its totient is φ = 68078242.

The previous prime is 68078237. The next prime is 68078281. The reversal of 68078243 is 34287086.

It is an a-pointer prime, because the next prime (68078281) can be obtained adding 68078243 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68078243 - 2²⁴ = 51301027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68078197 and 68078206.

It is not a weakly prime, because it can be changed into another prime (68078203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34039121 + 34039122.

It is an arithmetic number, because the mean of its divisors is an integer number (34039122).

Almost surely, 2^68078243 is an apocalyptic number.

68078243 is a deficient number, since it is larger than the sum of its proper divisors (1).

68078243 is an equidigital number, since it uses as much as digits as its factorization.

68078243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 68078243 is about 8250.9540660459. The cubic root of 68078243 is about 408.3219996669.

The spelling of 68078243 in words is "sixty-eight million, seventy-eight thousand, two hundred forty-three".