68843959 has 2 divisors, whose sum is σ = 68843960. Its totient is φ = 68843958.

The previous prime is 68843953. The next prime is 68843977. The reversal of 68843959 is 95934886.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68843959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68843953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34421979 + 34421980.

It is an arithmetic number, because the mean of its divisors is an integer number (34421980).

Almost surely, 2^68843959 is an apocalyptic number.

68843959 is a deficient number, since it is larger than the sum of its proper divisors (1).

68843959 is an equidigital number, since it uses as much as digits as its factorization.

68843959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 52.

The square root of 68843959 is about 8297.2259822184. The cubic root of 68843959 is about 409.8471748488.

The spelling of 68843959 in words is "sixty-eight million, eight hundred forty-three thousand, nine hundred fifty-nine".