68159826 has 32 divisors (see below), whose sum is σ = 173105280. Its totient is φ = 19474128.

The previous prime is 68159813. The next prime is 68159827. The reversal of 68159826 is 62895186.

It is not an unprimeable number, because it can be changed into a prime (68159827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89781 + ... + 90536.

It is an arithmetic number, because the mean of its divisors is an integer number (5409540).

Almost surely, 2^68159826 is an apocalyptic number.

68159826 is an abundant number, since it is smaller than the sum of its proper divisors (104945454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68159826 is a wasteful number, since it uses less digits than its factorization.

68159826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180335 (or 180329 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 68159826 is about 8255.8964383040. The cubic root of 68159826 is about 408.4850416527.

It can be divided in two parts, 6815 and 9826, that added together give a square (16641 = 129²).

The spelling of 68159826 in words is "sixty-eight million, one hundred fifty-nine thousand, eight hundred twenty-six".