685085300 has 18 divisors (see below), whose sum is σ = 1486635318. Its totient is φ = 274034080.

The previous prime is 685085293. The next prime is 685085311. The reversal of 685085300 is 3580586.

It can be written as a sum of positive squares in 3 ways, for example, as 94206436 + 590878864 = 9706^2 + 24308^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3425327 + ... + 3425526.

It is an arithmetic number, because the mean of its divisors is an integer number (82590851).

Almost surely, 2^685085300 is an apocalyptic number.

It is an amenable number.

685085300 is an abundant number, since it is smaller than the sum of its proper divisors (801550018).

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

685085300 is a wasteful number, since it uses less digits than its factorization.

685085300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6850867 (or 6850860 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 685085300 is about 26174.1341786123. The cubic root of 685085300 is about 881.5525708507.

The spelling of 685085300 in words is "six hundred eighty-five million, eighty-five thousand, three hundred".