864552823 has 2 divisors, whose sum is σ = 864552824. Its totient is φ = 864552822.

The previous prime is 864552811. The next prime is 864552847. The reversal of 864552823 is 328255468.

864552823 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 864552823 - 2¹⁷ = 864421751 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 864552823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864552803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432276411 + 432276412.

It is an arithmetic number, because the mean of its divisors is an integer number (432276412).

Almost surely, 2^864552823 is an apocalyptic number.

864552823 is a deficient number, since it is larger than the sum of its proper divisors (1).

864552823 is an equidigital number, since it uses as much as digits as its factorization.

864552823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 460800, while the sum is 43.

The square root of 864552823 is about 29403.2791198533. The cubic root of 864552823 is about 952.6437248646.

The spelling of 864552823 in words is "eight hundred sixty-four million, five hundred fifty-two thousand, eight hundred twenty-three".