68165388 has 72 divisors (see below), whose sum is σ = 188144320. Its totient is φ = 21520080.

The previous prime is 68165381. The next prime is 68165389. The reversal of 68165388 is 88356186.

It is not an unprimeable number, because it can be changed into a prime (68165381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16623 + ... + 20313.

Almost surely, 2^68165388 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 68165388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94072160).

68165388 is an abundant number, since it is smaller than the sum of its proper divisors (119978932).

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

68165388 is a wasteful number, since it uses less digits than its factorization.

68165388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3729 (or 3715 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 68165388 is about 8256.2332815879. The cubic root of 68165388 is about 408.4961524597.

The spelling of 68165388 in words is "sixty-eight million, one hundred sixty-five thousand, three hundred eighty-eight".