68278734 has 32 divisors (see below), whose sum is σ = 154599840. Its totient is φ = 22329216.

The previous prime is 68278699. The next prime is 68278747. The reversal of 68278734 is 43787286.

It is a happy number.

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 68278734.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9067 + ... + 14790.

It is an arithmetic number, because the mean of its divisors is an integer number (4831245).

Almost surely, 2^68278734 is an apocalyptic number.

68278734 is an abundant number, since it is smaller than the sum of its proper divisors (86321106).

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

68278734 is a wasteful number, since it uses less digits than its factorization.

68278734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23921 (or 23915 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 68278734 is about 8263.0946987191. The cubic root of 68278734 is about 408.7224440644.

The spelling of 68278734 in words is "sixty-eight million, two hundred seventy-eight thousand, seven hundred thirty-four".