686268974119 has 4 divisors (see below), whose sum is σ = 694537275096. Its totient is φ = 678000673144.

The previous prime is 686268974117. The next prime is 686268974137. The reversal of 686268974119 is 911479862686.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 911479862686 = 2 ⋅455739931343.

It is a cyclic number.

It is not a de Polignac number, because 686268974119 - 2¹ = 686268974117 is a prime.

It is a super-2 number, since 2×686268974119² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686268974117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4134150364 + ... + 4134150529.

It is an arithmetic number, because the mean of its divisors is an integer number (173634318774).

Almost surely, 2^686268974119 is an apocalyptic number.

686268974119 is a deficient number, since it is larger than the sum of its proper divisors (8268300977).

686268974119 is an equidigital number, since it uses as much as digits as its factorization.

686268974119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8268300976.

The product of its digits is 62705664, while the sum is 67.

The spelling of 686268974119 in words is "six hundred eighty-six billion, two hundred sixty-eight million, nine hundred seventy-four thousand, one hundred nineteen".