685832540 has 12 divisors (see below), whose sum is σ = 1440248376. Its totient is φ = 274333008.

The previous prime is 685832527. The next prime is 685832551. The reversal of 685832540 is 45238586.

685832540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17145794 + ... + 17145833.

It is an arithmetic number, because the mean of its divisors is an integer number (120020698).

Almost surely, 2^685832540 is an apocalyptic number.

It is an amenable number.

685832540 is an abundant number, since it is smaller than the sum of its proper divisors (754415836).

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

685832540 is a wasteful number, since it uses less digits than its factorization.

685832540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34291636 (or 34291634 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 41.

The square root of 685832540 is about 26188.4046860438. The cubic root of 685832540 is about 881.8729650117.

The spelling of 685832540 in words is "six hundred eighty-five million, eight hundred thirty-two thousand, five hundred forty".