678561360 has 160 divisors (see below), whose sum is σ = 2159326080. Its totient is φ = 176216064.

The previous prime is 678561319. The next prime is 678561361. The reversal of 678561360 is 63165876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678561361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2449542 + ... + 2449818.

It is an arithmetic number, because the mean of its divisors is an integer number (13495788).

Almost surely, 2^678561360 is an apocalyptic number.

678561360 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 678561360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1079663040).

678561360 is an abundant number, since it is smaller than the sum of its proper divisors (1480764720).

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

678561360 is a wasteful number, since it uses less digits than its factorization.

678561360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 678561360 is about 26049.2103527151. The cubic root of 678561360 is about 878.7453539316.

The spelling of 678561360 in words is "six hundred seventy-eight million, five hundred sixty-one thousand, three hundred sixty".