2560709 has 4 divisors (see below), whose sum is σ = 2572416. Its totient is φ = 2549004.

The previous prime is 2560697. The next prime is 2560721. The reversal of 2560709 is 9070652.

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 an interprime number because it is at equal distance from previous prime (2560697) and next prime (2560721).

It is a cyclic number.

It is not a de Polignac number, because 2560709 - 2¹⁶ = 2495173 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2560739) 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, 5519 + ... + 5964.

It is an arithmetic number, because the mean of its divisors is an integer number (643104).

2^2560709 is an apocalyptic number.

It is an amenable number.

2560709 is a deficient number, since it is larger than the sum of its proper divisors (11707).

2560709 is a wasteful number, since it uses less digits than its factorization.

2560709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11706.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 2560709 is about 1600.2215471615. The cubic root of 2560709 is about 136.8107034533.

The spelling of 2560709 in words is "two million, five hundred sixty thousand, seven hundred nine".