68158336 has 64 divisors (see below), whose sum is σ = 142473600. Its totient is φ = 32440320.

The previous prime is 68158309. The next prime is 68158357. The reversal of 68158336 is 63385186.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353056 + ... + 353248.

It is an arithmetic number, because the mean of its divisors is an integer number (2226150).

Almost surely, 2^68158336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68158336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71236800).

68158336 is an abundant number, since it is smaller than the sum of its proper divisors (74315264).

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

68158336 is a wasteful number, since it uses less digits than its factorization.

68158336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 315 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 68158336 is about 8255.8061992758. The cubic root of 68158336 is about 408.4820650843.

It can be divided in two parts, 6815 and 8336, that added together give a palindrome (15151).

The spelling of 68158336 in words is "sixty-eight million, one hundred fifty-eight thousand, three hundred thirty-six".