68317872 has 80 divisors (see below), whose sum is σ = 203415552. Its totient is φ = 19353600.

The previous prime is 68317867. The next prime is 68317877. The reversal of 68317872 is 27871386.

It is an interprime number because it is at equal distance from previous prime (68317867) and next prime (68317877).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (68317877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41872 + ... + 43472.

Almost surely, 2^68317872 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 68317872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101707776).

68317872 is an abundant number, since it is smaller than the sum of its proper divisors (135097680).

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

68317872 is a wasteful number, since it uses less digits than its factorization.

68317872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746 (or 1740 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 68317872 is about 8265.4626004840. The cubic root of 68317872 is about 408.8005236391.

The spelling of 68317872 in words is "sixty-eight million, three hundred seventeen thousand, eight hundred seventy-two".