685335960 has 192 divisors, whose sum is σ = 2381633280. Its totient is φ = 170311680.

The previous prime is 685335953. The next prime is 685335961. The reversal of 685335960 is 69533586.

685335960 is a `hidden beast` number, since 6 + 8 + 53 + 3 + 596 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685335961) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 691065 + ... + 692055.

It is an arithmetic number, because the mean of its divisors is an integer number (12404340).

Almost surely, 2^685335960 is an apocalyptic number.

685335960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685335960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1190816640).

685335960 is an abundant number, since it is smaller than the sum of its proper divisors (1696297320).

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

685335960 is a wasteful number, since it uses less digits than its factorization.

685335960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138 (or 1131 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The square root of 685335960 is about 26178.9220557303. The cubic root of 685335960 is about 881.6600723172.

The spelling of 685335960 in words is "six hundred eighty-five million, three hundred thirty-five thousand, nine hundred sixty".