678120278 has 16 divisors (see below), whose sum is σ = 1114547904. Its totient is φ = 306876360.

The previous prime is 678120263. The next prime is 678120329. The reversal of 678120278 is 872021876.

678120278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×678120278² = 919694222869594568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62900 + ... + 72887.

It is an arithmetic number, because the mean of its divisors is an integer number (69659244).

Almost surely, 2^678120278 is an apocalyptic number.

678120278 is a deficient number, since it is larger than the sum of its proper divisors (436427626).

678120278 is a wasteful number, since it uses less digits than its factorization.

678120278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136027.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 678120278 is about 26040.7426545404. The cubic root of 678120278 is about 878.5549104461.

The spelling of 678120278 in words is "six hundred seventy-eight million, one hundred twenty thousand, two hundred seventy-eight".