685485672 has 32 divisors (see below), whose sum is σ = 1717810080. Its totient is φ = 227949120.

The previous prime is 685485641. The next prime is 685485677. The reversal of 685485672 is 276584586.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (685485677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23818 + ... + 44025.

It is an arithmetic number, because the mean of its divisors is an integer number (53681565).

Almost surely, 2^685485672 is an apocalyptic number.

It is an amenable number.

685485672 is an abundant number, since it is smaller than the sum of its proper divisors (1032324408).

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

685485672 is a wasteful number, since it uses less digits than its factorization.

685485672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68273 (or 68269 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 51.

The square root of 685485672 is about 26181.7812992164. The cubic root of 685485672 is about 881.7242673447.

The spelling of 685485672 in words is "six hundred eighty-five million, four hundred eighty-five thousand, six hundred seventy-two".