864013 has 2 divisors, whose sum is σ = 864014. Its totient is φ = 864012.

The previous prime is 864011. The next prime is 864029. The reversal of 864013 is 310468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 797449 + 66564 = 893^2 + 258^2 .

It is a cyclic number.

It is not a de Polignac number, because 864013 - 2¹ = 864011 is a prime.

Together with 864011, it forms a pair of twin primes.

864013 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864011) 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, 432006 + 432007.

It is an arithmetic number, because the mean of its divisors is an integer number (432007).

2⁸⁶⁴⁰¹³ is an apocalyptic number.

It is an amenable number.

864013 is a deficient number, since it is larger than the sum of its proper divisors (1).

864013 is an equidigital number, since it uses as much as digits as its factorization.

864013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 864013 is about 929.5229959501. The cubic root of 864013 is about 95.2445408058.

The spelling of 864013 in words is "eight hundred sixty-four thousand, thirteen".