678223072848 has 160 divisors (see below), whose sum is σ = 1830926384640. Its totient is φ = 216063877120.

The previous prime is 678223072817. The next prime is 678223072853. The reversal of 678223072848 is 848270322876.

678223072848 is nontrivially palindromic in base 7.

It is a Cunningham number, because it is equal to 7¹⁴-1.

It is a super-2 number, since 2×678223072848² (a number of 24 digits) contains 22 as substring.

678223072848 is a nontrivial repdigit in base 7.

It is a plaindrome in base 7.

It is a nialpdrome in base 7.

It is a zygodrome in base 7.

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, 143294290 + ... + 143299022.

It is an arithmetic number, because the mean of its divisors is an integer number (11443289904).

Almost surely, 2^678223072848 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 678223072848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (915463192320).

678223072848 is an abundant number, since it is smaller than the sum of its proper divisors (1152703311792).

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

678223072848 is a wasteful number, since it uses less digits than its factorization.

678223072848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5797 (or 5791 counting only the distinct ones).

The product of its (nonzero) digits is 14450688, while the sum is 57.

The spelling of 678223072848 in words is "six hundred seventy-eight billion, two hundred twenty-three million, seventy-two thousand, eight hundred forty-eight".