68318523 has 24 divisors (see below), whose sum is σ = 121456608. Its totient is φ = 36035712.

The previous prime is 68318501. The next prime is 68318527. The reversal of 68318523 is 32581386.

It is not a de Polignac number, because 68318523 - 2⁹ = 68318011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68318527) 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 in 23 ways as a sum of consecutive naturals, for example, 40890 + ... + 42527.

It is an arithmetic number, because the mean of its divisors is an integer number (5060692).

Almost surely, 2^68318523 is an apocalyptic number.

68318523 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

68318523 is a deficient number, since it is larger than the sum of its proper divisors (53138085).

68318523 is a wasteful number, since it uses less digits than its factorization.

68318523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83443 (or 83440 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 68318523 is about 8265.5019811261. The cubic root of 68318523 is about 408.8018221197.

The spelling of 68318523 in words is "sixty-eight million, three hundred eighteen thousand, five hundred twenty-three".