685492112 has 20 divisors (see below), whose sum is σ = 1331914380. Its totient is φ = 341772288.

The previous prime is 685492109. The next prime is 685492117. The reversal of 685492112 is 211294586.

685492112 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 2 ways, for example, as 264257536 + 421234576 = 16256^2 + 20524^2 .

It is a super-2 number, since 2×685492112² = 939798871228441088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (685492117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55037 + ... + 66332.

It is an arithmetic number, because the mean of its divisors is an integer number (66595719).

Almost surely, 2^685492112 is an apocalyptic number.

It is an amenable number.

685492112 is a deficient number, since it is larger than the sum of its proper divisors (646422268).

685492112 is a wasteful number, since it uses less digits than its factorization.

685492112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121730 (or 121724 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 685492112 is about 26181.9042852120. The cubic root of 685492112 is about 881.7270285434.

The spelling of 685492112 in words is "six hundred eighty-five million, four hundred ninety-two thousand, one hundred twelve".