678287213880 has 256 divisors, whose sum is σ = 2096916595200. Its totient is φ = 175445637120.

The previous prime is 678287213831. The next prime is 678287213887. The reversal of 678287213880 is 88312782876.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678287213887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 551901106 + ... + 551902334.

It is an arithmetic number, because the mean of its divisors is an integer number (8191080450).

Almost surely, 2^678287213880 is an apocalyptic number.

678287213880 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 678287213880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1048458297600).

678287213880 is an abundant number, since it is smaller than the sum of its proper divisors (1418629381320).

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

678287213880 is a wasteful number, since it uses less digits than its factorization.

678287213880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2214 (or 2210 counting only the distinct ones).

The product of its (nonzero) digits is 14450688, while the sum is 60.

The spelling of 678287213880 in words is "six hundred seventy-eight billion, two hundred eighty-seven million, two hundred thirteen thousand, eight hundred eighty".