678333856 has 48 divisors (see below), whose sum is σ = 1383933600. Its totient is φ = 327079168.

The previous prime is 678333853. The next prime is 678333869. The reversal of 678333856 is 658333876.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (678333853) by changing a digit.

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, 96675 + ... + 103453.

It is an arithmetic number, because the mean of its divisors is an integer number (28831950).

Almost surely, 2^678333856 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 678333856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (691966800).

678333856 is an abundant number, since it is smaller than the sum of its proper divisors (705599744).

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

678333856 is a wasteful number, since it uses less digits than its factorization.

678333856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6901 (or 6893 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 49.

The square root of 678333856 is about 26044.8431748014. The cubic root of 678333856 is about 878.6471361229.

The spelling of 678333856 in words is "six hundred seventy-eight million, three hundred thirty-three thousand, eight hundred fifty-six".