685602000 has 240 divisors, whose sum is σ = 2455624080. Its totient is φ = 178176000.

The previous prime is 685601957. The next prime is 685602013. The reversal of 685602000 is 206586.

685602000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 600446016 + 85155984 = 24504^2 + 9228^2 .

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 737536 + ... + 738464.

It is an arithmetic number, because the mean of its divisors is an integer number (10231767).

Almost surely, 2^685602000 is an apocalyptic number.

685602000 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 685602000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1227812040).

685602000 is an abundant number, since it is smaller than the sum of its proper divisors (1770022080).

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

685602000 is a wasteful number, since it uses less digits than its factorization.

685602000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999 (or 980 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 685602000 is about 26184.0027497707. The cubic root of 685602000 is about 881.7741411900.

Adding to 685602000 its reverse (206586), we get a palindrome (685808586).

The spelling of 685602000 in words is "six hundred eighty-five million, six hundred two thousand".