678786528 has 192 divisors, whose sum is σ = 2144862720. Its totient is φ = 183859200.

The previous prime is 678786487. The next prime is 678786553. The reversal of 678786528 is 825687876.

It is a happy number.

678786528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1188483 + ... + 1189053.

It is an arithmetic number, because the mean of its divisors is an integer number (11171160).

Almost surely, 2^678786528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678786528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1072431360).

678786528 is an abundant number, since it is smaller than the sum of its proper divisors (1466076192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678786528 is a wasteful number, since it uses less digits than its factorization.

678786528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 673 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 57.

The square root of 678786528 is about 26053.5319678542. The cubic root of 678786528 is about 878.8425416308.

The spelling of 678786528 in words is "six hundred seventy-eight million, seven hundred eighty-six thousand, five hundred twenty-eight".