678668866876 has 48 divisors (see below), whose sum is σ = 1594634549760. Its totient is φ = 244076713920.

The previous prime is 678668866873. The next prime is 678668866877.

678668866876 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 678668866876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678668866873) 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, 84744856 + ... + 84752863.

It is an arithmetic number, because the mean of its divisors is an integer number (33221553120).

Almost surely, 2^678668866876 is an apocalyptic number.

It is an amenable number.

678668866876 is an abundant number, since it is smaller than the sum of its proper divisors (915965682884).

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

678668866876 is a wasteful number, since it uses less digits than its factorization.

678668866876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169497754 (or 169497752 counting only the distinct ones).

The product of its digits is 9364045824, while the sum is 82.

The spelling of 678668866876 in words is "six hundred seventy-eight billion, six hundred sixty-eight million, eight hundred sixty-six thousand, eight hundred seventy-six".