685492110 has 48 divisors (see below), whose sum is σ = 1786112640. Its totient is φ = 182404800.

The previous prime is 685492109. The next prime is 685492117. The reversal of 685492110 is 11294586.

It is a Curzon number.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35160 + ... + 51060.

It is an arithmetic number, because the mean of its divisors is an integer number (37210680).

Almost surely, 2^685492110 is an apocalyptic number.

685492110 is an abundant number, since it is smaller than the sum of its proper divisors (1100620530).

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

685492110 is a wasteful number, since it uses less digits than its factorization.

685492110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16393 (or 16390 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 685492110 is about 26181.9042470176. The cubic root of 685492110 is about 881.7270276859.

The spelling of 685492110 in words is "six hundred eighty-five million, four hundred ninety-two thousand, one hundred ten".