678800380 has 48 divisors (see below), whose sum is σ = 1491174720. Its totient is φ = 259066368.

The previous prime is 678800377. The next prime is 678800389. The reversal of 678800380 is 83008876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678800389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208606 + ... + 211834.

It is an arithmetic number, because the mean of its divisors is an integer number (31066140).

Almost surely, 2^678800380 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 678800380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (745587360).

678800380 is an abundant number, since it is smaller than the sum of its proper divisors (812374340).

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

678800380 is a wasteful number, since it uses less digits than its factorization.

678800380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3718 (or 3716 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 678800380 is about 26053.7978037752. The cubic root of 678800380 is about 878.8485197714.

The spelling of 678800380 in words is "six hundred seventy-eight million, eight hundred thousand, three hundred eighty".