678857758876 has 24 divisors (see below), whose sum is σ = 1297603223280. Its totient is φ = 308190268800.

The previous prime is 678857758847. The next prime is 678857758883.

678857758876 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×678857758876² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 678857758876.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9499995 + ... + 9571186.

It is an arithmetic number, because the mean of its divisors is an integer number (54066800970).

Almost surely, 2^678857758876 is an apocalyptic number.

It is an amenable number.

678857758876 is a deficient number, since it is larger than the sum of its proper divisors (618745464404).

678857758876 is a wasteful number, since it uses less digits than its factorization.

678857758876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19072005 (or 19072003 counting only the distinct ones).

The product of its digits is 8851046400, while the sum is 82.

The spelling of 678857758876 in words is "six hundred seventy-eight billion, eight hundred fifty-seven million, seven hundred fifty-eight thousand, eight hundred seventy-six".