68338878 has 16 divisors (see below), whose sum is σ = 144717840. Its totient is φ = 21439616.

The previous prime is 68338873. The next prime is 68338927. The reversal of 68338878 is 87883386.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68338878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68338873) 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, 334893 + ... + 335096.

It is an arithmetic number, because the mean of its divisors is an integer number (9044865).

Almost surely, 2^68338878 is an apocalyptic number.

68338878 is an abundant number, since it is smaller than the sum of its proper divisors (76378962).

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

68338878 is a wasteful number, since it uses less digits than its factorization.

68338878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670011.

The product of its digits is 1548288, while the sum is 51.

The square root of 68338878 is about 8266.7332120978. The cubic root of 68338878 is about 408.8424179174.

The spelling of 68338878 in words is "sixty-eight million, three hundred thirty-eight thousand, eight hundred seventy-eight".