685249700 has 36 divisors (see below), whose sum is σ = 1538273940. Its totient is φ = 264647040.

The previous prime is 685249679. The next prime is 685249703. The reversal of 685249700 is 7942586.

It can be written as a sum of positive squares in 6 ways, for example, as 12054784 + 673194916 = 3472^2 + 25946^2 .

It is not an unprimeable number, because it can be changed into a prime (685249703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115247 + ... + 121046.

Almost surely, 2^685249700 is an apocalyptic number.

It is an amenable number.

685249700 is an abundant number, since it is smaller than the sum of its proper divisors (853024240).

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

685249700 is a wasteful number, since it uses less digits than its factorization.

685249700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236336 (or 236329 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 685249700 is about 26177.2744952564. The cubic root of 685249700 is about 881.6230806356.

The spelling of 685249700 in words is "six hundred eighty-five million, two hundred forty-nine thousand, seven hundred".