686011 has 2 divisors, whose sum is σ = 686012. Its totient is φ = 686010.

The previous prime is 686009. The next prime is 686027. The reversal of 686011 is 110686.

It is a weak prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 110989 and 989011.

It is a cyclic number.

It is not a de Polignac number, because 686011 - 2¹ = 686009 is a prime.

It is a super-2 number, since 2×686011² = 941222184242, which contains 22 as substring.

Together with 686009, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (686041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343005 + 343006.

It is an arithmetic number, because the mean of its divisors is an integer number (343006).

2⁶⁸⁶⁰¹¹ is an apocalyptic number.

686011 is a deficient number, since it is larger than the sum of its proper divisors (1).

686011 is an equidigital number, since it uses as much as digits as its factorization.

686011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 686011 is about 828.2578101050. The cubic root of 686011 is about 88.1949448892.

Adding to 686011 its reverse (110686), we get a palindrome (796697).

The spelling of 686011 in words is "six hundred eighty-six thousand, eleven".