68288286 has 64 divisors (see below), whose sum is σ = 159376896. Its totient is φ = 19437440.

The previous prime is 68288267. The next prime is 68288287.

68288286 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68288287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135511 + ... + 136013.

It is an arithmetic number, because the mean of its divisors is an integer number (2490264).

Almost surely, 2^68288286 is an apocalyptic number.

68288286 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 68288286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79688448).

68288286 is an abundant number, since it is smaller than the sum of its proper divisors (91088610).

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

68288286 is a wasteful number, since it uses less digits than its factorization.

68288286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 536 counting only the distinct ones).

The product of its digits is 589824, while the sum is 48.

The square root of 68288286 is about 8263.6726701873. The cubic root of 68288286 is about 408.7415028768.

The spelling of 68288286 in words is "sixty-eight million, two hundred eighty-eight thousand, two hundred eighty-six".