480640865 has 4 divisors (see below), whose sum is σ = 576769044. Its totient is φ = 384512688.

The previous prime is 480640843. The next prime is 480640873. The reversal of 480640865 is 568046084.

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 72318016 + 408322849 = 8504^2 + 20207^2 .

It is a cyclic number.

It is not a de Polignac number, because 480640865 - 2⁶ = 480640801 is a prime.

It is a super-3 number, since 3×480640865³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian 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, 48064082 + ... + 48064091.

It is an arithmetic number, because the mean of its divisors is an integer number (144192261).

Almost surely, 2^480640865 is an apocalyptic number.

It is an amenable number.

480640865 is a deficient number, since it is larger than the sum of its proper divisors (96128179).

480640865 is an equidigital number, since it uses as much as digits as its factorization.

480640865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96128178.

The product of its (nonzero) digits is 184320, while the sum is 41.

The square root of 480640865 is about 21923.5230973491. The cubic root of 480640865 is about 783.3218318315.

The spelling of 480640865 in words is "four hundred eighty million, six hundred forty thousand, eight hundred sixty-five".