685960348920 has 512 divisors, whose sum is σ = 2719223654400. Its totient is φ = 134022758400.

The previous prime is 685960348901. The next prime is 685960348951. The reversal of 685960348920 is 29843069586.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 281014900 + ... + 281017340.

It is an arithmetic number, because the mean of its divisors is an integer number (5310983700).

Almost surely, 2^685960348920 is an apocalyptic number.

685960348920 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 685960348920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1359611827200).

685960348920 is an abundant number, since it is smaller than the sum of its proper divisors (2033263305480).

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

685960348920 is a wasteful number, since it uses less digits than its factorization.

685960348920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4279 (or 4275 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 60.

The spelling of 685960348920 in words is "six hundred eighty-five billion, nine hundred sixty million, three hundred forty-eight thousand, nine hundred twenty".