685039216 has 20 divisors (see below), whose sum is σ = 1327707432. Its totient is φ = 342405056.

The previous prime is 685039183. The next prime is 685039249. The reversal of 685039216 is 612930586.

685039216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (685039183) and next prime (685039249).

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, 63015 + ... + 73081.

Almost surely, 2^685039216 is an apocalyptic number.

It is an amenable number.

685039216 is a deficient number, since it is larger than the sum of its proper divisors (642668216).

685039216 is a wasteful number, since it uses less digits than its factorization.

685039216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14328 (or 14322 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 685039216 is about 26173.2538290523. The cubic root of 685039216 is about 881.5328037844.

The spelling of 685039216 in words is "six hundred eighty-five million, thirty-nine thousand, two hundred sixteen".