678108730 has 16 divisors (see below), whose sum is σ = 1314487944. Its totient is φ = 250378560.

The previous prime is 678108721. The next prime is 678108737. The reversal of 678108730 is 37801876.

678108730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 319801689 + 358307041 = 17883^2 + 18929^2 .

It is not an unprimeable number, because it can be changed into a prime (678108737) 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, 2607981 + ... + 2608240.

Almost surely, 2^678108730 is an apocalyptic number.

678108730 is a deficient number, since it is larger than the sum of its proper divisors (636379214).

678108730 is a wasteful number, since it uses less digits than its factorization.

678108730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5216241.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 678108730 is about 26040.5209241290. The cubic root of 678108730 is about 878.5499233222.

The spelling of 678108730 in words is "six hundred seventy-eight million, one hundred eight thousand, seven hundred thirty".