68888886 has 64 divisors (see below), whose sum is σ = 155561472. Its totient is φ = 20160000.

The previous prime is 68888873. The next prime is 68888893.

68888886 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×68888886² = 9491357228641992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 285726 + ... + 285966.

It is an arithmetic number, because the mean of its divisors is an integer number (2430648).

Almost surely, 2^68888886 is an apocalyptic number.

68888886 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 68888886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77780736).

68888886 is an abundant number, since it is smaller than the sum of its proper divisors (86672586).

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

68888886 is a wasteful number, since it uses less digits than its factorization.

68888886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389.

The product of its digits is 9437184, while the sum is 60.

The square root of 68888886 is about 8299.9328912950. The cubic root of 68888886 is about 409.9363097577.

The spelling of 68888886 in words is "sixty-eight million, eight hundred eighty-eight thousand, eight hundred eighty-six".