685853880634 has 48 divisors (see below), whose sum is σ = 1118236579200. Its totient is φ = 315347655168.

The previous prime is 685853880631. The next prime is 685853880659. The reversal of 685853880634 is 436088358586.

685853880634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (685853880631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133095402 + ... + 133100554.

It is an arithmetic number, because the mean of its divisors is an integer number (23296595400).

Almost surely, 2^685853880634 is an apocalyptic number.

685853880634 is a deficient number, since it is larger than the sum of its proper divisors (432382698566).

685853880634 is a wasteful number, since it uses less digits than its factorization.

685853880634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6599 (or 6586 counting only the distinct ones).

The product of its (nonzero) digits is 132710400, while the sum is 64.

The spelling of 685853880634 in words is "six hundred eighty-five billion, eight hundred fifty-three million, eight hundred eighty thousand, six hundred thirty-four".