8021065 has 8 divisors (see below), whose sum is σ = 10365768. Its totient is φ = 5923200.

The previous prime is 8021063. The next prime is 8021077. The reversal of 8021065 is 5601208.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1245456 + 6775609 = 1116^2 + 2603^2 .

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

It is not a de Polignac number, because 8021065 - 2¹ = 8021063 is a prime.

It is a Duffinian number.

8021065 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8021063) by changing a digit.

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, 61636 + ... + 61765.

It is an arithmetic number, because the mean of its divisors is an integer number (1295721).

Almost surely, 2^8021065 is an apocalyptic number.

It is an amenable number.

8021065 is a deficient number, since it is larger than the sum of its proper divisors (2344703).

8021065 is a wasteful number, since it uses less digits than its factorization.

8021065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123419.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 8021065 is about 2832.1484777462. The cubic root of 8021065 is about 200.1753878173.

The spelling of 8021065 in words is "eight million, twenty-one thousand, sixty-five".