68736523 has 2 divisors, whose sum is σ = 68736524. Its totient is φ = 68736522.

The previous prime is 68736511. The next prime is 68736527. The reversal of 68736523 is 32563786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68736523 - 2⁹ = 68736011 is a prime.

It is not a weakly prime, because it can be changed into another prime (68736527) 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, 34368261 + 34368262.

It is an arithmetic number, because the mean of its divisors is an integer number (34368262).

Almost surely, 2^68736523 is an apocalyptic number.

68736523 is a deficient number, since it is larger than the sum of its proper divisors (1).

68736523 is an equidigital number, since it uses as much as digits as its factorization.

68736523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 40.

The square root of 68736523 is about 8290.7492423785. The cubic root of 68736523 is about 409.6338650837.

The spelling of 68736523 in words is "sixty-eight million, seven hundred thirty-six thousand, five hundred twenty-three".