16856011 has 2 divisors, whose sum is σ = 16856012. Its totient is φ = 16856010.

The previous prime is 16856009. The next prime is 16856017. The reversal of 16856011 is 11065861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16856011 - 2¹ = 16856009 is a prime.

Together with 16856009, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16856017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8428005 + 8428006.

It is an arithmetic number, because the mean of its divisors is an integer number (8428006).

Almost surely, 2^16856011 is an apocalyptic number.

16856011 is a deficient number, since it is larger than the sum of its proper divisors (1).

16856011 is an equidigital number, since it uses as much as digits as its factorization.

16856011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 16856011 is about 4105.6072632438. The cubic root of 16856011 is about 256.4001463115.

The spelling of 16856011 in words is "sixteen million, eight hundred fifty-six thousand, eleven".