685025770 has 128 divisors (see below), whose sum is σ = 1514080512. Its totient is φ = 221633280.

The previous prime is 685025749. The next prime is 685025771. The reversal of 685025770 is 77520586.

685025770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (685025771) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6402057 + ... + 6402163.

It is an arithmetic number, because the mean of its divisors is an integer number (11828754).

Almost surely, 2^685025770 is an apocalyptic number.

685025770 is an abundant number, since it is smaller than the sum of its proper divisors (829054742).

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

685025770 is a wasteful number, since it uses less digits than its factorization.

685025770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 685025770 is about 26172.9969625184. The cubic root of 685025770 is about 881.5270361498.

The spelling of 685025770 in words is "six hundred eighty-five million, twenty-five thousand, seven hundred seventy".