7065409 has 12 divisors (see below), whose sum is σ = 7839804. Its totient is φ = 6329664.

The previous prime is 7065403. The next prime is 7065413. The reversal of 7065409 is 9045607.

It can be written as a sum of positive squares in 6 ways, for example, as 815409 + 6250000 = 903^2 + 2500^2 .

It is not a de Polignac number, because 7065409 - 2¹¹ = 7063361 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7065403) 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 11 ways as a sum of consecutive naturals, for example, 17599 + ... + 17995.

It is an arithmetic number, because the mean of its divisors is an integer number (653317).

Almost surely, 2^7065409 is an apocalyptic number.

It is an amenable number.

7065409 is a deficient number, since it is larger than the sum of its proper divisors (774395).

7065409 is a wasteful number, since it uses less digits than its factorization.

7065409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 7065409 is about 2658.0837082379. The cubic root of 7065409 is about 191.8870954401.

The spelling of 7065409 in words is "seven million, sixty-five thousand, four hundred nine".