685396608000 has 1408 divisors, whose sum is σ = 2618583711744. Its totient is φ = 157925376000.

The previous prime is 685396607981. The next prime is 685396608023. The reversal of 685396608000 is 806693586.

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, 6654335949 + ... + 6654336051.

It is an arithmetic number, because the mean of its divisors is an integer number (1859789568).

Almost surely, 2^685396608000 is an apocalyptic number.

685396608000 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 685396608000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1309291855872).

685396608000 is an abundant number, since it is smaller than the sum of its proper divisors (1933187103744).

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

685396608000 is a wasteful number, since it uses less digits than its factorization.

685396608000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 685396608000 in words is "six hundred eighty-five billion, three hundred ninety-six million, six hundred eight thousand".