68839523 has 2 divisors, whose sum is σ = 68839524. Its totient is φ = 68839522.

The previous prime is 68839501. The next prime is 68839543. The reversal of 68839523 is 32593886.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68839523 - 2¹⁶ = 68773987 is a prime.

It is not a weakly prime, because it can be changed into another prime (68839543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34419761 + 34419762.

It is an arithmetic number, because the mean of its divisors is an integer number (34419762).

Almost surely, 2^68839523 is an apocalyptic number.

68839523 is a deficient number, since it is larger than the sum of its proper divisors (1).

68839523 is an equidigital number, since it uses as much as digits as its factorization.

68839523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 44.

The square root of 68839523 is about 8296.9586596535. The cubic root of 68839523 is about 409.8383717471.

The spelling of 68839523 in words is "sixty-eight million, eight hundred thirty-nine thousand, five hundred twenty-three".