685120304 has 30 divisors (see below), whose sum is σ = 1448829516. Its totient is φ = 311260480.

The previous prime is 685120301. The next prime is 685120357. The reversal of 685120304 is 403021586.

It is not an unprimeable number, because it can be changed into a prime (685120301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 346262 + ... + 348234.

Almost surely, 2^685120304 is an apocalyptic number.

It is an amenable number.

685120304 is an abundant number, since it is smaller than the sum of its proper divisors (763709212).

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

685120304 is an equidigital number, since it uses as much as digits as its factorization.

685120304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3965 (or 1986 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 685120304 is about 26174.8028454848. The cubic root of 685120304 is about 881.5675847186.

The spelling of 685120304 in words is "six hundred eighty-five million, one hundred twenty thousand, three hundred four".