684947112 has 64 divisors (see below), whose sum is σ = 1807176000. Its totient is φ = 215737344.

The previous prime is 684947099. The next prime is 684947149. The reversal of 684947112 is 211749486.

684947112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195714 + ... + 199182.

It is an arithmetic number, because the mean of its divisors is an integer number (28237125).

Almost surely, 2^684947112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 684947112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (903588000).

684947112 is an abundant number, since it is smaller than the sum of its proper divisors (1122228888).

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

684947112 is a wasteful number, since it uses less digits than its factorization.

684947112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3930 (or 3926 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 684947112 is about 26171.4942637978. The cubic root of 684947112 is about 881.4932944470.

The spelling of 684947112 in words is "six hundred eighty-four million, nine hundred forty-seven thousand, one hundred twelve".