8461382065 has 4 divisors (see below), whose sum is σ = 10153658484. Its totient is φ = 6769105648.

The previous prime is 8461382063. The next prime is 8461382177. The reversal of 8461382065 is 5602831648.

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 1648035216 + 6813346849 = 40596^2 + 82543^2 .

It is a cyclic number.

It is not a de Polignac number, because 8461382065 - 2¹ = 8461382063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8461382063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 846138202 + ... + 846138211.

It is an arithmetic number, because the mean of its divisors is an integer number (2538414621).

Almost surely, 2^8461382065 is an apocalyptic number.

It is an amenable number.

8461382065 is a deficient number, since it is larger than the sum of its proper divisors (1692276419).

8461382065 is a wasteful number, since it uses less digits than its factorization.

8461382065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692276418.

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

The square root of 8461382065 is about 91985.7709920399. The cubic root of 8461382065 is about 2037.7321704145.

The spelling of 8461382065 in words is "eight billion, four hundred sixty-one million, three hundred eighty-two thousand, sixty-five".