678265344 has 240 divisors, whose sum is σ = 2110817280. Its totient is φ = 209018880.

The previous prime is 678265309. The next prime is 678265361. The reversal of 678265344 is 443562876.

It is a self number, because there is not a number n which added to its sum of digits gives 678265344.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5340609 + ... + 5340735.

It is an arithmetic number, because the mean of its divisors is an integer number (8795072).

Almost surely, 2^678265344 is an apocalyptic number.

678265344 is a gapful number since it is divisible by the number (64) 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 678265344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1055408640).

678265344 is an abundant number, since it is smaller than the sum of its proper divisors (1432551936).

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

678265344 is a wasteful number, since it uses less digits than its factorization.

678265344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 212 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The square root of 678265344 is about 26043.5278716229. The cubic root of 678265344 is about 878.6175538855.

The spelling of 678265344 in words is "six hundred seventy-eight million, two hundred sixty-five thousand, three hundred forty-four".