685804284 has 108 divisors (see below), whose sum is σ = 1915372368. Its totient is φ = 206743680.

The previous prime is 685804279. The next prime is 685804303. The reversal of 685804284 is 482408586.

685804284 is a `hidden beast` number, since 68 + 580 + 4 + 2 + 8 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1363177 + ... + 1363679.

Almost surely, 2^685804284 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 685804284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (957686184).

685804284 is an abundant number, since it is smaller than the sum of its proper divisors (1229568084).

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

685804284 is a wasteful number, since it uses less digits than its factorization.

685804284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848 (or 832 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 45.

The square root of 685804284 is about 26187.8652050907. The cubic root of 685804284 is about 881.8608539188.

The spelling of 685804284 in words is "six hundred eighty-five million, eight hundred four thousand, two hundred eighty-four".