7818065 has 8 divisors (see below), whose sum is σ = 9535848. Its totient is φ = 6151680.

The previous prime is 7818053. The next prime is 7818067. The reversal of 7818065 is 5608187.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 22801 + 7795264 = 151^2 + 2792^2 .

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

It is not a de Polignac number, because 7818065 - 2⁴ = 7818049 is a prime.

It is a super-2 number, since 2×7818065² = 122244280688450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7818067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12512 + ... + 13121.

It is an arithmetic number, because the mean of its divisors is an integer number (1191981).

Almost surely, 2^7818065 is an apocalyptic number.

It is an amenable number.

7818065 is a deficient number, since it is larger than the sum of its proper divisors (1717783).

7818065 is a wasteful number, since it uses less digits than its factorization.

7818065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25699.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 7818065 is about 2796.0802921232. The cubic root of 7818065 is about 198.4722343769.

The spelling of 7818065 in words is "seven million, eight hundred eighteen thousand, sixty-five".