678795278 has 16 divisors (see below), whose sum is σ = 1232099424. Its totient is φ = 273799680.

The previous prime is 678795269. The next prime is 678795289. The reversal of 678795278 is 872597876.

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 7 ways as a sum of consecutive naturals, for example, 1425803 + ... + 1426278.

It is an arithmetic number, because the mean of its divisors is an integer number (77006214).

Almost surely, 2^678795278 is an apocalyptic number.

678795278 is a deficient number, since it is larger than the sum of its proper divisors (553304146).

678795278 is a wasteful number, since it uses less digits than its factorization.

678795278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2852107.

The product of its digits is 11854080, while the sum is 59.

The square root of 678795278 is about 26053.6998908025. The cubic root of 678795278 is about 878.8463178986.

The spelling of 678795278 in words is "six hundred seventy-eight million, seven hundred ninety-five thousand, two hundred seventy-eight".