685097690695 has 16 divisors (see below), whose sum is σ = 897380065440. Its totient is φ = 497961251200.

The previous prime is 685097690657. The next prime is 685097690713. The reversal of 685097690695 is 596096790586.

It is not a de Polignac number, because 685097690695 - 2³³ = 676507756103 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3550336 + ... + 3738325.

It is an arithmetic number, because the mean of its divisors is an integer number (56086254090).

Almost surely, 2^685097690695 is an apocalyptic number.

685097690695 is a deficient number, since it is larger than the sum of its proper divisors (212282374745).

685097690695 is a wasteful number, since it uses less digits than its factorization.

685097690695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7290386.

The product of its (nonzero) digits is 220449600, while the sum is 70.

The spelling of 685097690695 in words is "six hundred eighty-five billion, ninety-seven million, six hundred ninety thousand, six hundred ninety-five".