68818078 has 16 divisors (see below), whose sum is σ = 121780224. Its totient is φ = 28541880.

The previous prime is 68818063. The next prime is 68818097. The reversal of 68818078 is 87081886.

It is a super-2 number, since 2×68818078² = 9471855719228168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78850 + ... + 79717.

It is an arithmetic number, because the mean of its divisors is an integer number (7611264).

Almost surely, 2^68818078 is an apocalyptic number.

68818078 is a deficient number, since it is larger than the sum of its proper divisors (52962146).

68818078 is a wasteful number, since it uses less digits than its factorization.

68818078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158607.

The product of its (nonzero) digits is 172032, while the sum is 46.

The square root of 68818078 is about 8295.6662179719. Note that the first 3 decimals coincide. The cubic root of 68818078 is about 409.7958094888.

The spelling of 68818078 in words is "sixty-eight million, eight hundred eighteen thousand, seventy-eight".