678740846 has 36 divisors (see below), whose sum is σ = 1223940024. Its totient is φ = 281466360.

The previous prime is 678740731. The next prime is 678740849. The reversal of 678740846 is 648047876.

678740846 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 678740794 and 678740803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678740849) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 90575 + ... + 97781.

It is an arithmetic number, because the mean of its divisors is an integer number (33998334).

Almost surely, 2^678740846 is an apocalyptic number.

678740846 is a deficient number, since it is larger than the sum of its proper divisors (545199178).

678740846 is a wasteful number, since it uses less digits than its factorization.

678740846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7285 (or 7247 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 50.

The square root of 678740846 is about 26052.6552581498. The cubic root of 678740846 is about 878.8228259646.

The spelling of 678740846 in words is "six hundred seventy-eight million, seven hundred forty thousand, eight hundred forty-six".