685342455600 has 120 divisors (see below), whose sum is σ = 2394960409152. Its totient is φ = 166143622400.

The previous prime is 685342455571. The next prime is 685342455617. The reversal of 685342455600 is 6554243586.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 685342455600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25946742 + ... + 25973141.

Almost surely, 2^685342455600 is an apocalyptic number.

685342455600 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

685342455600 is an abundant number, since it is smaller than the sum of its proper divisors (1709617953552).

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

685342455600 is a wasteful number, since it uses less digits than its factorization.

685342455600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51919915 (or 51919904 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 48.

The spelling of 685342455600 in words is "six hundred eighty-five billion, three hundred forty-two million, four hundred fifty-five thousand, six hundred".