684646402116 has 24 divisors (see below), whose sum is σ = 1681587654880. Its totient is φ = 216204126912.

The previous prime is 684646402051. The next prime is 684646402123. The reversal of 684646402116 is 611204646486.

It is a happy 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, 1501417321 + ... + 1501417776.

Almost surely, 2^684646402116 is an apocalyptic number.

It is an amenable number.

684646402116 is an abundant number, since it is smaller than the sum of its proper divisors (996941252764).

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

684646402116 is a wasteful number, since it uses less digits than its factorization.

684646402116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3002835123 (or 3002835121 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 48.

The spelling of 684646402116 in words is "six hundred eighty-four billion, six hundred forty-six million, four hundred two thousand, one hundred sixteen".