685814130 has 96 divisors (see below), whose sum is σ = 1832523264. Its totient is φ = 177867648.

The previous prime is 685814111. The next prime is 685814137. The reversal of 685814130 is 31418586.

685814130 is a `hidden beast` number, since 6 + 8 + 581 + 41 + 30 = 666.

685814130 is a nontrivial binomial coefficient, being equal to C(37036, 2).

It is not an unprimeable number, because it can be changed into a prime (685814137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 832899 + ... + 833721.

It is an arithmetic number, because the mean of its divisors is an integer number (19088784).

Almost surely, 2^685814130 is an apocalyptic number.

685814130 is the 37035-th triangular number and also the 18518-th hexagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685814130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (916261632).

685814130 is an abundant number, since it is smaller than the sum of its proper divisors (1146709134).

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

685814130 is a wasteful number, since it uses less digits than its factorization.

685814130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080 (or 1077 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 685814130 is about 26188.0531922478. The cubic root of 685814130 is about 881.8650741512.

The spelling of 685814130 in words is "six hundred eighty-five million, eight hundred fourteen thousand, one hundred thirty".