864536485 has 4 divisors (see below), whose sum is σ = 1037443788. Its totient is φ = 691629184.

The previous prime is 864536441. The next prime is 864536507. The reversal of 864536485 is 584635468.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 450373284 + 414163201 = 21222^2 + 20351^2 .

It is a cyclic number.

It is not a de Polignac number, because 864536485 - 2¹⁷ = 864405413 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86453644 + ... + 86453653.

It is an arithmetic number, because the mean of its divisors is an integer number (259360947).

Almost surely, 2^864536485 is an apocalyptic number.

It is an amenable number.

864536485 is a deficient number, since it is larger than the sum of its proper divisors (172907303).

864536485 is a wasteful number, since it uses less digits than its factorization.

864536485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172907302.

The product of its digits is 2764800, while the sum is 49.

The square root of 864536485 is about 29403.0012923851. The cubic root of 864536485 is about 952.6377239237.

The spelling of 864536485 in words is "eight hundred sixty-four million, five hundred thirty-six thousand, four hundred eighty-five".