678646876 has 24 divisors (see below), whose sum is σ = 1205620416. Its totient is φ = 334219200.

The previous prime is 678646781. The next prime is 678646879.

It is a happy number.

678646876 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 678646876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678646879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75325 + ... + 83851.

It is an arithmetic number, because the mean of its divisors is an integer number (50234184).

Almost surely, 2^678646876 is an apocalyptic number.

It is an amenable number.

678646876 is a deficient number, since it is larger than the sum of its proper divisors (526973540).

678646876 is a wasteful number, since it uses less digits than its factorization.

678646876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8829 (or 8827 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 58.

The square root of 678646876 is about 26050.8517327169. The cubic root of 678646876 is about 878.7822671402.

The spelling of 678646876 in words is "six hundred seventy-eight million, six hundred forty-six thousand, eight hundred seventy-six".