686412263 has 2 divisors, whose sum is σ = 686412264. Its totient is φ = 686412262.

The previous prime is 686412203. The next prime is 686412289. The reversal of 686412263 is 362214686.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-686412263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (686412203) 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 as a sum of consecutive naturals, namely, 343206131 + 343206132.

It is an arithmetic number, because the mean of its divisors is an integer number (343206132).

Almost surely, 2^686412263 is an apocalyptic number.

686412263 is a deficient number, since it is larger than the sum of its proper divisors (1).

686412263 is an equidigital number, since it uses as much as digits as its factorization.

686412263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 38.

The square root of 686412263 is about 26199.4706625916. The cubic root of 686412263 is about 882.1213726187.

The spelling of 686412263 in words is "six hundred eighty-six million, four hundred twelve thousand, two hundred sixty-three".