686467838737 has 2 divisors, whose sum is σ = 686467838738. Its totient is φ = 686467838736.

The previous prime is 686467838701. The next prime is 686467838857. The reversal of 686467838737 is 737838764686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 631509944976 + 54957893761 = 794676^2 + 234431^2 .

It is a cyclic number.

It is not a de Polignac number, because 686467838737 - 2²⁷ = 686333621009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 686467838737.

It is not a weakly prime, because it can be changed into another prime (686467808737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343233919368 + 343233919369.

It is an arithmetic number, because the mean of its divisors is an integer number (343233919369).

Almost surely, 2^686467838737 is an apocalyptic number.

It is an amenable number.

686467838737 is a deficient number, since it is larger than the sum of its proper divisors (1).

686467838737 is an equidigital number, since it uses as much as digits as its factorization.

686467838737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1365590016, while the sum is 73.

The spelling of 686467838737 in words is "six hundred eighty-six billion, four hundred sixty-seven million, eight hundred thirty-eight thousand, seven hundred thirty-seven".