7072709 has 6 divisors (see below), whose sum is σ = 8227494. Its totient is φ = 6062280.

The previous prime is 7072699. The next prime is 7072771. The reversal of 7072709 is 9072707.

It can be written as a sum of positive squares in only one way, i.e., 5303809 + 1768900 = 2303^2 + 1330^2 .

It is not a de Polignac number, because 7072709 - 2¹⁶ = 7007173 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7072909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72122 + ... + 72219.

It is an arithmetic number, because the mean of its divisors is an integer number (1371249).

Almost surely, 2^7072709 is an apocalyptic number.

It is an amenable number.

7072709 is a deficient number, since it is larger than the sum of its proper divisors (1154785).

7072709 is a wasteful number, since it uses less digits than its factorization.

7072709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144355 (or 144348 counting only the distinct ones).

The product of its (nonzero) digits is 6174, while the sum is 32.

The square root of 7072709 is about 2659.4565234273. The cubic root of 7072709 is about 191.9531587846.

The spelling of 7072709 in words is "seven million, seventy-two thousand, seven hundred nine".