678737808 has 360 divisors, whose sum is σ = 2381633280. Its totient is φ = 179504640.

The previous prime is 678737803. The next prime is 678737819. The reversal of 678737808 is 808737876.

It is not an unprimeable number, because it can be changed into a prime (678737803) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6343291 + ... + 6343397.

It is an arithmetic number, because the mean of its divisors is an integer number (6615648).

Almost surely, 2^678737808 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 678737808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1190816640).

678737808 is an abundant number, since it is smaller than the sum of its proper divisors (1702895472).

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

678737808 is a wasteful number, since it uses less digits than its factorization.

678737808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The square root of 678737808 is about 26052.5969530870. The cubic root of 678737808 is about 878.8215147780.

The spelling of 678737808 in words is "six hundred seventy-eight million, seven hundred thirty-seven thousand, eight hundred eight".