685546645586 has 16 divisors (see below), whose sum is σ = 1121843062080. Its totient is φ = 311601150480.

The previous prime is 685546645577. The next prime is 685546645591.

It is a happy number.

685546645586 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109100 + ... + 1176008.

It is an arithmetic number, because the mean of its divisors is an integer number (70115191380).

Almost surely, 2^685546645586 is an apocalyptic number.

685546645586 is a deficient number, since it is larger than the sum of its proper divisors (436296416494).

685546645586 is a wasteful number, since it uses less digits than its factorization.

685546645586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096129.

The product of its digits is 829440000, while the sum is 68.

The spelling of 685546645586 in words is "six hundred eighty-five billion, five hundred forty-six million, six hundred forty-five thousand, five hundred eighty-six".