864679 has 2 divisors, whose sum is σ = 864680. Its totient is φ = 864678.

The previous prime is 864673. The next prime is 864691. The reversal of 864679 is 976468.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 864679 - 2⁷ = 864551 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864673) 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, 432339 + 432340.

It is an arithmetic number, because the mean of its divisors is an integer number (432340).

2⁸⁶⁴⁶⁷⁹ is an apocalyptic number.

864679 is a deficient number, since it is larger than the sum of its proper divisors (1).

864679 is an equidigital number, since it uses as much as digits as its factorization.

864679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 864679 is about 929.8811752047. The cubic root of 864679 is about 95.2690067080.

The spelling of 864679 in words is "eight hundred sixty-four thousand, six hundred seventy-nine".