68878404 has 96 divisors (see below), whose sum is σ = 210739200. Its totient is φ = 19038240.

The previous prime is 68878387. The next prime is 68878457. The reversal of 68878404 is 40487886.

It is a self number, because there is not a number n which added to its sum of digits gives 68878404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21967 + ... + 24905.

It is an arithmetic number, because the mean of its divisors is an integer number (2195200).

Almost surely, 2^68878404 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 68878404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105369600).

68878404 is an abundant number, since it is smaller than the sum of its proper divisors (141860796).

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

68878404 is a wasteful number, since it uses less digits than its factorization.

68878404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2990 (or 2982 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The square root of 68878404 is about 8299.3014163844. The cubic root of 68878404 is about 409.9155169971.

The spelling of 68878404 in words is "sixty-eight million, eight hundred seventy-eight thousand, four hundred four".