685775577586 has 24 divisors (see below), whose sum is σ = 1192071681936. Its totient is φ = 293379923520.

The previous prime is 685775577583. The next prime is 685775577593.

It is a happy number.

685775577586 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (685775577583) by changing a digit.

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, 53923776 + ... + 53936491.

It is an arithmetic number, because the mean of its divisors is an integer number (49669653414).

Almost surely, 2^685775577586 is an apocalyptic number.

685775577586 is a deficient number, since it is larger than the sum of its proper divisors (506296104350).

685775577586 is a wasteful number, since it uses less digits than its factorization.

685775577586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107860314 (or 107860297 counting only the distinct ones).

The product of its digits is 3457440000, while the sum is 76.

The spelling of 685775577586 in words is "six hundred eighty-five billion, seven hundred seventy-five million, five hundred seventy-seven thousand, five hundred eighty-six".