68216243 has 2 divisors, whose sum is σ = 68216244. Its totient is φ = 68216242.

The previous prime is 68216231. The next prime is 68216249. The reversal of 68216243 is 34261286.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68216243 - 2⁴ = 68216227 is a prime.

It is not a weakly prime, because it can be changed into another prime (68216249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34108121 + 34108122.

It is an arithmetic number, because the mean of its divisors is an integer number (34108122).

Almost surely, 2^68216243 is an apocalyptic number.

68216243 is a deficient number, since it is larger than the sum of its proper divisors (1).

68216243 is an equidigital number, since it uses as much as digits as its factorization.

68216243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 32.

The square root of 68216243 is about 8259.3125016553. The cubic root of 68216243 is about 408.5977138160.

The spelling of 68216243 in words is "sixty-eight million, two hundred sixteen thousand, two hundred forty-three".