68912843 has 2 divisors, whose sum is σ = 68912844. Its totient is φ = 68912842.

The previous prime is 68912839. The next prime is 68912863. The reversal of 68912843 is 34821986.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68912843 - 2² = 68912839 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68912843.

It is not a weakly prime, because it can be changed into another prime (68912863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34456421 + 34456422.

It is an arithmetic number, because the mean of its divisors is an integer number (34456422).

Almost surely, 2^68912843 is an apocalyptic number.

68912843 is a deficient number, since it is larger than the sum of its proper divisors (1).

68912843 is an equidigital number, since it uses as much as digits as its factorization.

68912843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 41.

The square root of 68912843 is about 8301.3759702835. The cubic root of 68912843 is about 409.9838244659.

The spelling of 68912843 in words is "sixty-eight million, nine hundred twelve thousand, eight hundred forty-three".