684065500 has 48 divisors (see below), whose sum is σ = 1528791264. Its totient is φ = 267254400.

The previous prime is 684065497. The next prime is 684065507. The reversal of 684065500 is 5560486.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684065507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5592 + ... + 37408.

It is an arithmetic number, because the mean of its divisors is an integer number (31849818).

Almost surely, 2^684065500 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 684065500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (764395632).

684065500 is an abundant number, since it is smaller than the sum of its proper divisors (844725764).

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

684065500 is a wasteful number, since it uses less digits than its factorization.

684065500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31879 (or 31867 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 684065500 is about 26154.6458588145. The cubic root of 684065500 is about 881.1149349531.

The spelling of 684065500 in words is "six hundred eighty-four million, sixty-five thousand, five hundred".