8819665 has 8 divisors (see below), whose sum is σ = 10603368. Its totient is φ = 7042560.

The previous prime is 8819659. The next prime is 8819729. The reversal of 8819665 is 5669188.

It can be written as a sum of positive squares in 4 ways, for example, as 1399489 + 7420176 = 1183^2 + 2724^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8819665 - 2¹⁷ = 8688593 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 2055 + ... + 4675.

It is an arithmetic number, because the mean of its divisors is an integer number (1325421).

Almost surely, 2^8819665 is an apocalyptic number.

It is an amenable number.

8819665 is a deficient number, since it is larger than the sum of its proper divisors (1783703).

8819665 is a wasteful number, since it uses less digits than its factorization.

8819665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3299.

The product of its digits is 103680, while the sum is 43.

The square root of 8819665 is about 2969.7920802642. The cubic root of 8819665 is about 206.6096949563.

The spelling of 8819665 in words is "eight million, eight hundred nineteen thousand, six hundred sixty-five".