684848688 has 80 divisors (see below), whose sum is σ = 1879805280. Its totient is φ = 214437888.

The previous prime is 684848663. The next prime is 684848693. The reversal of 684848688 is 886848486.

It is a nude number because it is divisible by every one of its digits.

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, 44856 + ... + 58152.

It is an arithmetic number, because the mean of its divisors is an integer number (23497566).

Almost surely, 2^684848688 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 684848688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (939902640).

684848688 is an abundant number, since it is smaller than the sum of its proper divisors (1194956592).

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

684848688 is a wasteful number, since it uses less digits than its factorization.

684848688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13374 (or 13368 counting only the distinct ones).

The product of its digits is 18874368, while the sum is 60.

The square root of 684848688 is about 26169.6138297836. The cubic root of 684848688 is about 881.4510701397.

The spelling of 684848688 in words is "six hundred eighty-four million, eight hundred forty-eight thousand, six hundred eighty-eight".