686064330019 has 2 divisors, whose sum is σ = 686064330020. Its totient is φ = 686064330018.

The previous prime is 686064329971. The next prime is 686064330041. The reversal of 686064330019 is 910033460686.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 686064330019 - 2¹³ = 686064321827 is a prime.

It is a super-2 number, since 2×686064330019² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (686064330079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343032165009 + 343032165010.

It is an arithmetic number, because the mean of its divisors is an integer number (343032165010).

Almost surely, 2^686064330019 is an apocalyptic number.

686064330019 is a deficient number, since it is larger than the sum of its proper divisors (1).

686064330019 is an equidigital number, since it uses as much as digits as its factorization.

686064330019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 686064330019 in words is "six hundred eighty-six billion, sixty-four million, three hundred thirty thousand, nineteen".