678497794876 has 24 divisors (see below), whose sum is σ = 1297952127360. Its totient is φ = 307779956400.

The previous prime is 678497794867. The next prime is 678497794973.

678497794876 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 678497794876.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15681456 + ... + 15724663.

It is an arithmetic number, because the mean of its divisors is an integer number (54081338640).

Almost surely, 2^678497794876 is an apocalyptic number.

It is an amenable number.

678497794876 is a deficient number, since it is larger than the sum of its proper divisors (619454332484).

678497794876 is a wasteful number, since it uses less digits than its factorization.

678497794876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31406625 (or 31406623 counting only the distinct ones).

The product of its digits is 7169347584, while the sum is 82.

The spelling of 678497794876 in words is "six hundred seventy-eight billion, four hundred ninety-seven million, seven hundred ninety-four thousand, eight hundred seventy-six".