678925069920 has 192 divisors, whose sum is σ = 2386896906240. Its totient is φ = 180234561024.

The previous prime is 678925069861. The next prime is 678925069931. The reversal of 678925069920 is 29960529876.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 610987 + ... + 1315733.

It is an arithmetic number, because the mean of its divisors is an integer number (12431754720).

Almost surely, 2^678925069920 is an apocalyptic number.

678925069920 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 678925069920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1193448453120).

678925069920 is an abundant number, since it is smaller than the sum of its proper divisors (1707971836320).

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

678925069920 is a wasteful number, since it uses less digits than its factorization.

678925069920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704994 (or 704980 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 63.

The spelling of 678925069920 in words is "six hundred seventy-eight billion, nine hundred twenty-five million, sixty-nine thousand, nine hundred twenty".