685452102800 has 120 divisors (see below), whose sum is σ = 1684144996512. Its totient is φ = 268025472000.

The previous prime is 685452102763. The next prime is 685452102823. The reversal of 685452102800 is 8201254586.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3413180 + ... + 3608420.

Almost surely, 2^685452102800 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 685452102800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (842072498256).

685452102800 is an abundant number, since it is smaller than the sum of its proper divisors (998692893712).

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

685452102800 is a wasteful number, since it uses less digits than its factorization.

685452102800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195457 (or 195446 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 41.

The spelling of 685452102800 in words is "six hundred eighty-five billion, four hundred fifty-two million, one hundred two thousand, eight hundred".