685668967197 has 8 divisors (see below), whose sum is σ = 916289005344. Its totient is φ = 456080786928.

The previous prime is 685668967189. The next prime is 685668967213. The reversal of 685668967197 is 791769866586.

685668967197 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 685668967197 - 2³ = 685668967189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685668967177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257962918 + ... + 257965575.

It is an arithmetic number, because the mean of its divisors is an integer number (114536125668).

Almost surely, 2^685668967197 is an apocalyptic number.

It is an amenable number.

685668967197 is a deficient number, since it is larger than the sum of its proper divisors (230620038147).

685668967197 is a wasteful number, since it uses less digits than its factorization.

685668967197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515928939.

The product of its digits is 1646023680, while the sum is 78.

The spelling of 685668967197 in words is "six hundred eighty-five billion, six hundred sixty-eight million, nine hundred sixty-seven thousand, one hundred ninety-seven".