685000006850 has 48 divisors (see below), whose sum is σ = 1358894362248. Its totient is φ = 255999959040.

The previous prime is 685000006837. The next prime is 685000006871. The reversal of 685000006850 is 58600000586.

It can be written as a sum of positive squares in 12 ways, for example, as 212204871649 + 472795135201 = 460657^2 + 687601^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2824727 + ... + 3057626.

Almost surely, 2^685000006850 is an apocalyptic number.

685000006850 is a deficient number, since it is larger than the sum of its proper divisors (673894355398).

685000006850 is a wasteful number, since it uses less digits than its factorization.

685000006850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5882519 (or 5882514 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 38.

It can be divided in two parts, 68500000 and 6850, that multiplied together give a square (469225000000 = 685000²).

The spelling of 685000006850 in words is "six hundred eighty-five billion, six thousand, eight hundred fifty".