685249000 has 32 divisors (see below), whose sum is σ = 1603485000. Its totient is φ = 274099200.

The previous prime is 685248997. The next prime is 685249013. The reversal of 685249000 is 942586.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 409091076 + 276157924 = 20226^2 + 16618^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341625 + ... + 343624.

Almost surely, 2^685249000 is an apocalyptic number.

It is an amenable number.

685249000 is an abundant number, since it is smaller than the sum of its proper divisors (918236000).

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

685249000 is a wasteful number, since it uses less digits than its factorization.

685249000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685270 (or 685256 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 685249000 is about 26177.2611248771. The cubic root of 685249000 is about 881.6227804353.

The spelling of 685249000 in words is "six hundred eighty-five million, two hundred forty-nine thousand".