864360005 has 4 divisors (see below), whose sum is σ = 1037232012. Its totient is φ = 691488000.

The previous prime is 864360001. The next prime is 864360031. The reversal of 864360005 is 500063468.

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 369831361 + 494528644 = 19231^2 + 22238^2 .

It is not a de Polignac number, because 864360005 - 2² = 864360001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864360001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86435996 + ... + 86436005.

It is an arithmetic number, because the mean of its divisors is an integer number (259308003).

Almost surely, 2^864360005 is an apocalyptic number.

It is an amenable number.

864360005 is a deficient number, since it is larger than the sum of its proper divisors (172872007).

864360005 is a wasteful number, since it uses less digits than its factorization.

864360005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172872006.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 864360005 is about 29400.0000850340. Note that the first 4 decimals coincide. The cubic root of 864360005 is about 952.5728980702.

The spelling of 864360005 in words is "eight hundred sixty-four million, three hundred sixty thousand, five".