678699996876 has 72 divisors (see below), whose sum is σ = 1981658834064. Its totient is φ = 193568624640.

The previous prime is 678699996869. The next prime is 678699996913.

It is a happy number.

678699996876 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50401765 + ... + 50415228.

It is an arithmetic number, because the mean of its divisors is an integer number (27523039362).

Almost surely, 2^678699996876 is an apocalyptic number.

678699996876 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

678699996876 is an abundant number, since it is smaller than the sum of its proper divisors (1302958837188).

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

678699996876 is a wasteful number, since it uses less digits than its factorization.

678699996876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100817031 (or 100817026 counting only the distinct ones).

The product of its digits is 26665583616, while the sum is 90.

The spelling of 678699996876 in words is "six hundred seventy-eight billion, six hundred ninety-nine million, nine hundred ninety-six thousand, eight hundred seventy-six".