678887748 has 216 divisors, whose sum is σ = 2218376160. Its totient is φ = 173053440.

The previous prime is 678887743. The next prime is 678887749. The reversal of 678887748 is 847788876.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (678887743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1144540 + ... + 1145132.

It is an arithmetic number, because the mean of its divisors is an integer number (10270260).

Almost surely, 2^678887748 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 678887748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1109188080).

678887748 is an abundant number, since it is smaller than the sum of its proper divisors (1539488412).

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

678887748 is a wasteful number, since it uses less digits than its factorization.

678887748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687 (or 675 counting only the distinct ones).

The product of its digits is 33718272, while the sum is 63.

The square root of 678887748 is about 26055.4744343679. The cubic root of 678887748 is about 878.8862235136.

The spelling of 678887748 in words is "six hundred seventy-eight million, eight hundred eighty-seven thousand, seven hundred forty-eight".