7081009 has 8 divisors (see below), whose sum is σ = 7702632. Its totient is φ = 6470400.

The previous prime is 7081001. The next prime is 7081021. The reversal of 7081009 is 9001807.

It can be written as a sum of positive squares in 4 ways, for example, as 3459600 + 3621409 = 1860^2 + 1903^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7081009 - 2³ = 7081001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7081001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1384 + ... + 4009.

It is an arithmetic number, because the mean of its divisors is an integer number (962829).

Almost surely, 2^7081009 is an apocalyptic number.

It is an amenable number.

7081009 is a deficient number, since it is larger than the sum of its proper divisors (621623).

7081009 is a wasteful number, since it uses less digits than its factorization.

7081009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5507.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 7081009 is about 2661.0165350858. The cubic root of 7081009 is about 192.0282167008.

The spelling of 7081009 in words is "seven million, eighty-one thousand, nine".