685941658843 has 16 divisors (see below), whose sum is σ = 802927941376. Its totient is φ = 573730063200.

The previous prime is 685941658823. The next prime is 685941658859. The reversal of 685941658843 is 348856149586.

It is not a de Polignac number, because 685941658843 - 2⁹ = 685941658331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (685941658823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 767796 + ... + 1400497.

It is an arithmetic number, because the mean of its divisors is an integer number (50182996336).

Almost surely, 2^685941658843 is an apocalyptic number.

685941658843 is a deficient number, since it is larger than the sum of its proper divisors (116986282533).

685941658843 is a wasteful number, since it uses less digits than its factorization.

685941658843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169394.

The product of its digits is 199065600, while the sum is 67.

The spelling of 685941658843 in words is "six hundred eighty-five billion, nine hundred forty-one million, six hundred fifty-eight thousand, eight hundred forty-three".