864081679 has 2 divisors, whose sum is σ = 864081680. Its totient is φ = 864081678.

The previous prime is 864081671. The next prime is 864081707. The reversal of 864081679 is 976180468.

864081679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 864081679 - 2³ = 864081671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864081671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432040839 + 432040840.

It is an arithmetic number, because the mean of its divisors is an integer number (432040840).

Almost surely, 2^864081679 is an apocalyptic number.

864081679 is a deficient number, since it is larger than the sum of its proper divisors (1).

864081679 is an equidigital number, since it uses as much as digits as its factorization.

864081679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 864081679 is about 29395.2662685678. The cubic root of 864081679 is about 952.4706435061.

The spelling of 864081679 in words is "eight hundred sixty-four million, eighty-one thousand, six hundred seventy-nine".