685985360 has 160 divisors (see below), whose sum is σ = 1781885952. Its totient is φ = 244408320.

The previous prime is 685985359. The next prime is 685985383. The reversal of 685985360 is 63589586.

It is a junction number, because it is equal to n+sod(n) for n = 685985299 and 685985308.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2234327 + ... + 2234633.

Almost surely, 2^685985360 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 685985360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (890942976).

685985360 is an abundant number, since it is smaller than the sum of its proper divisors (1095900592).

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

685985360 is a wasteful number, since it uses less digits than its factorization.

685985360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 50.

The square root of 685985360 is about 26191.3222270278. The cubic root of 685985360 is about 881.9384609892.

The spelling of 685985360 in words is "six hundred eighty-five million, nine hundred eighty-five thousand, three hundred sixty".