686172212353 has 8 divisors (see below), whose sum is σ = 694873203200. Its totient is φ = 677471603328.

The previous prime is 686172212339. The next prime is 686172212393. The reversal of 686172212353 is 353212271686.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-686172212353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (686172212393) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5863825 + ... + 5979697.

It is an arithmetic number, because the mean of its divisors is an integer number (86859150400).

Almost surely, 2^686172212353 is an apocalyptic number.

It is an amenable number.

686172212353 is a deficient number, since it is larger than the sum of its proper divisors (8700990847).

686172212353 is a wasteful number, since it uses less digits than its factorization.

686172212353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190911.

The product of its digits is 725760, while the sum is 46.

The spelling of 686172212353 in words is "six hundred eighty-six billion, one hundred seventy-two million, two hundred twelve thousand, three hundred fifty-three".