678048680 has 64 divisors (see below), whose sum is σ = 1574171280. Its totient is φ = 262656000.

The previous prime is 678048667. The next prime is 678048697. The reversal of 678048680 is 86840876.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 367795684 + 310252996 = 19178^2 + 17614^2 .

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 355730 + ... + 357630.

Almost surely, 2^678048680 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 678048680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (787085640).

678048680 is an abundant number, since it is smaller than the sum of its proper divisors (896122600).

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

678048680 is a wasteful number, since it uses less digits than its factorization.

678048680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2190 (or 2186 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The square root of 678048680 is about 26039.3678878732. The cubic root of 678048680 is about 878.5239891920.

The spelling of 678048680 in words is "six hundred seventy-eight million, forty-eight thousand, six hundred eighty".