8820065 has 4 divisors (see below), whose sum is σ = 10584084. Its totient is φ = 7056048.

The previous prime is 8820041. The next prime is 8820073. The reversal of 8820065 is 5600288.

It is a happy number.

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 2307361 + 6512704 = 1519^2 + 2552^2 .

It is a cyclic number.

It is not a de Polignac number, because 8820065 - 2⁶ = 8820001 is a prime.

It is a Duffinian number.

It is a Curzon 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, 882002 + ... + 882011.

It is an arithmetic number, because the mean of its divisors is an integer number (2646021).

Almost surely, 2^8820065 is an apocalyptic number.

It is an amenable number.

8820065 is a deficient number, since it is larger than the sum of its proper divisors (1764019).

8820065 is a wasteful number, since it uses less digits than its factorization.

8820065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764018.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 8820065 is about 2969.8594242826. The cubic root of 8820065 is about 206.6128183791.

The spelling of 8820065 in words is "eight million, eight hundred twenty thousand, sixty-five".