68218368 has 80 divisors (see below), whose sum is σ = 189737856. Its totient is φ = 21739520.

The previous prime is 68218363. The next prime is 68218373. The reversal of 68218368 is 86381286.

It is an interprime number because it is at equal distance from previous prime (68218363) and next prime (68218373).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68218363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34363 + ... + 36293.

Almost surely, 2^68218368 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 68218368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94868928).

68218368 is an abundant number, since it is smaller than the sum of its proper divisors (121519488).

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

68218368 is a wasteful number, since it uses less digits than its factorization.

68218368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1975 (or 1959 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 68218368 is about 8259.4411433220. The cubic root of 68218368 is about 408.6019565061.

It can be divided in two parts, 68218 and 368, that added together give a palindrome (68586).

The spelling of 68218368 in words is "sixty-eight million, two hundred eighteen thousand, three hundred sixty-eight".