68873279 has 2 divisors, whose sum is σ = 68873280. Its totient is φ = 68873278.

The previous prime is 68873261. The next prime is 68873281. The reversal of 68873279 is 97237886.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68873279 is a prime.

Together with 68873281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68873179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34436639 + 34436640.

It is an arithmetic number, because the mean of its divisors is an integer number (34436640).

Almost surely, 2^68873279 is an apocalyptic number.

68873279 is a deficient number, since it is larger than the sum of its proper divisors (1).

68873279 is an equidigital number, since it uses as much as digits as its factorization.

68873279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 50.

The square root of 68873279 is about 8298.9926497136. The cubic root of 68873279 is about 409.9053499539.

The spelling of 68873279 in words is "sixty-eight million, eight hundred seventy-three thousand, two hundred seventy-nine".