6864860005 has 4 divisors (see below), whose sum is σ = 8237832012. Its totient is φ = 5491888000.

The previous prime is 6864859957. The next prime is 6864860017. The reversal of 6864860005 is 5000684686.

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 2774234241 + 4090625764 = 52671^2 + 63958^2 .

It is not a de Polignac number, because 6864860005 - 2⁹ = 6864859493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 686485996 + ... + 686486005.

It is an arithmetic number, because the mean of its divisors is an integer number (2059458003).

Almost surely, 2^6864860005 is an apocalyptic number.

It is an amenable number.

6864860005 is a deficient number, since it is larger than the sum of its proper divisors (1372972007).

6864860005 is a wasteful number, since it uses less digits than its factorization.

6864860005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372972006.

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 6864860005 is about 82854.4507253533. The cubic root of 6864860005 is about 1900.5409360069.

The spelling of 6864860005 in words is "six billion, eight hundred sixty-four million, eight hundred sixty thousand, five".