685520603600 has 360 divisors, whose sum is σ = 1971362003328. Its totient is φ = 228324096000.

The previous prime is 685520603557. The next prime is 685520603653. The reversal of 685520603600 is 6306025586.

685520603600 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 95860025 + ... + 95867175.

Almost surely, 2^685520603600 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 685520603600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (985681001664).

685520603600 is an abundant number, since it is smaller than the sum of its proper divisors (1285841399728).

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

685520603600 is a wasteful number, since it uses less digits than its factorization.

685520603600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7323 (or 7305 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 685520603600 in words is "six hundred eighty-five billion, five hundred twenty million, six hundred three thousand, six hundred".