68844691 has 2 divisors, whose sum is σ = 68844692. Its totient is φ = 68844690.

The previous prime is 68844689. The next prime is 68844697. The reversal of 68844691 is 19644886.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68844691 - 2¹ = 68844689 is a prime.

Together with 68844689, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68844697) 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, 34422345 + 34422346.

It is an arithmetic number, because the mean of its divisors is an integer number (34422346).

Almost surely, 2^68844691 is an apocalyptic number.

68844691 is a deficient number, since it is larger than the sum of its proper divisors (1).

68844691 is an equidigital number, since it uses as much as digits as its factorization.

68844691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 46.

The square root of 68844691 is about 8297.2700932295. The cubic root of 68844691 is about 409.8486274433.

The spelling of 68844691 in words is "sixty-eight million, eight hundred forty-four thousand, six hundred ninety-one".