8481565 has 4 divisors (see below), whose sum is σ = 10177884. Its totient is φ = 6785248.

The previous prime is 8481559. The next prime is 8481593. The reversal of 8481565 is 5651848.

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 1653796 + 6827769 = 1286^2 + 2613^2 .

It is a cyclic number.

It is not a de Polignac number, because 8481565 - 2⁷ = 8481437 is a prime.

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 848152 + ... + 848161.

It is an arithmetic number, because the mean of its divisors is an integer number (2544471).

Almost surely, 2^8481565 is an apocalyptic number.

It is an amenable number.

8481565 is a deficient number, since it is larger than the sum of its proper divisors (1696319).

8481565 is a wasteful number, since it uses less digits than its factorization.

8481565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696318.

The product of its digits is 38400, while the sum is 37.

The square root of 8481565 is about 2912.3126549188. The cubic root of 8481565 is about 203.9351084775.

The spelling of 8481565 in words is "eight million, four hundred eighty-one thousand, five hundred sixty-five".