685505505586 has 32 divisors (see below), whose sum is σ = 1148715691200. Its totient is φ = 304110401280.

The previous prime is 685505505551. The next prime is 685505505611.

685505505586 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 685505505586.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 938310 + ... + 1500478.

It is an arithmetic number, because the mean of its divisors is an integer number (35897365350).

Almost surely, 2^685505505586 is an apocalyptic number.

685505505586 is a deficient number, since it is larger than the sum of its proper divisors (463210185614).

685505505586 is a wasteful number, since it uses less digits than its factorization.

685505505586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563514.

The product of its (nonzero) digits is 36000000, while the sum is 58.

The spelling of 685505505586 in words is "six hundred eighty-five billion, five hundred five million, five hundred five thousand, five hundred eighty-six".