685573375586 has 24 divisors (see below), whose sum is σ = 1136880047772. Its totient is φ = 309822946400.

The previous prime is 685573375573. The next prime is 685573375601.

685573375586 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 685552536361 + 20839225 = 827981^2 + 4565^2 .

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 11 ways as a sum of consecutive naturals, for example, 8145845 + ... + 8229576.

Almost surely, 2^685573375586 is an apocalyptic number.

685573375586 is a deficient number, since it is larger than the sum of its proper divisors (451306672186).

685573375586 is a wasteful number, since it uses less digits than its factorization.

685573375586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16375618 (or 16375607 counting only the distinct ones).

The product of its digits is 635040000, while the sum is 68.

The spelling of 685573375586 in words is "six hundred eighty-five billion, five hundred seventy-three million, three hundred seventy-five thousand, five hundred eighty-six".