2086709 has 4 divisors (see below), whose sum is σ = 2095680. Its totient is φ = 2077740.

The previous prime is 2086697. The next prime is 2086723. The reversal of 2086709 is 9076802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2086709 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 (2086739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4127 + ... + 4604.

It is an arithmetic number, because the mean of its divisors is an integer number (523920).

2^2086709 is an apocalyptic number.

It is an amenable number.

2086709 is a deficient number, since it is larger than the sum of its proper divisors (8971).

2086709 is an equidigital number, since it uses as much as digits as its factorization.

2086709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8970.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 2086709 is about 1444.5445649062. The cubic root of 2086709 is about 127.7871829806.

The spelling of 2086709 in words is "two million, eighty-six thousand, seven hundred nine".