678881280 has 576 divisors, whose sum is σ = 2823387840. Its totient is φ = 137625600.

The previous prime is 678881279. The next prime is 678881299. The reversal of 678881280 is 82188876.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 16558060 + ... + 16558100.

It is an arithmetic number, because the mean of its divisors is an integer number (4901715).

Almost surely, 2^678881280 is an apocalyptic number.

678881280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678881280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1411693920).

678881280 is an abundant number, since it is smaller than the sum of its proper divisors (2144506560).

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

678881280 is a wasteful number, since it uses less digits than its factorization.

678881280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 48.

The square root of 678881280 is about 26055.3503142829. The cubic root of 678881280 is about 878.8834323530.

The spelling of 678881280 in words is "six hundred seventy-eight million, eight hundred eighty-one thousand, two hundred eighty".