68839878 has 8 divisors (see below), whose sum is σ = 137679768. Its totient is φ = 22946624.

The previous prime is 68839873. The next prime is 68839879. The reversal of 68839878 is 87893886.

It is a sphenic number, since it is the product of 3 distinct primes.

68839878 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68839873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5736651 + ... + 5736662.

It is an arithmetic number, because the mean of its divisors is an integer number (17209971).

Almost surely, 2^68839878 is an apocalyptic number.

68839878 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

68839878 is a wasteful number, since it uses less digits than its factorization.

68839878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11473318.

The product of its digits is 4644864, while the sum is 57.

The square root of 68839878 is about 8296.9800530072. The cubic root of 68839878 is about 409.8390762473.

It can be divided in two parts, 6883 and 9878, that added together give a palindrome (16761).

The spelling of 68839878 in words is "sixty-eight million, eight hundred thirty-nine thousand, eight hundred seventy-eight".