2002709 has 4 divisors (see below), whose sum is σ = 2016300. Its totient is φ = 1989120.

The previous prime is 2002681. The next prime is 2002723. The reversal of 2002709 is 9072002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 255025 + 1747684 = 505^2 + 1322^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002709 - 2⁸ = 2002453 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 (2002739) 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, 6572 + ... + 6869.

It is an arithmetic number, because the mean of its divisors is an integer number (504075).

2^2002709 is an apocalyptic number.

It is an amenable number.

2002709 is a deficient number, since it is larger than the sum of its proper divisors (13591).

2002709 is a wasteful number, since it uses less digits than its factorization.

2002709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13590.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 2002709 is about 1415.1710144007. The cubic root of 2002709 is about 126.0489647604.

The spelling of 2002709 in words is "two million, two thousand, seven hundred nine".