7065665 has 4 divisors (see below), whose sum is σ = 8478804. Its totient is φ = 5652528.

The previous prime is 7065649. The next prime is 7065671. The reversal of 7065665 is 5665607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5665607 = 17 ⋅333271.

It can be written as a sum of positive squares in 2 ways, for example, as 935089 + 6130576 = 967^2 + 2476^2 .

It is a cyclic number.

It is not a de Polignac number, because 7065665 - 2⁴ = 7065649 is a prime.

It is a Duffinian 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, 706562 + ... + 706571.

It is an arithmetic number, because the mean of its divisors is an integer number (2119701).

Almost surely, 2^7065665 is an apocalyptic number.

It is an amenable number.

7065665 is a deficient number, since it is larger than the sum of its proper divisors (1413139).

7065665 is a wasteful number, since it uses less digits than its factorization.

7065665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413138.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 7065665 is about 2658.1318627939. The cubic root of 7065665 is about 191.8894129518.

The spelling of 7065665 in words is "seven million, sixty-five thousand, six hundred sixty-five".