68408243 has 2 divisors, whose sum is σ = 68408244. Its totient is φ = 68408242.

The previous prime is 68408239. The next prime is 68408257. The reversal of 68408243 is 34280486.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68408243 - 2² = 68408239 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (68408143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34204121 + 34204122.

It is an arithmetic number, because the mean of its divisors is an integer number (34204122).

Almost surely, 2^68408243 is an apocalyptic number.

68408243 is a deficient number, since it is larger than the sum of its proper divisors (1).

68408243 is an equidigital number, since it uses as much as digits as its factorization.

68408243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 68408243 is about 8270.9275779685. The cubic root of 68408243 is about 408.9806982321.

The spelling of 68408243 in words is "sixty-eight million, four hundred eight thousand, two hundred forty-three".