2568709 has 24 divisors (see below), whose sum is σ = 3217536. Its totient is φ = 2032800.

The previous prime is 2568703. The next prime is 2568719. The reversal of 2568709 is 9078652.

It is not a de Polignac number, because 2568709 - 2³ = 2568701 is a prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 5 + 6⁸ + 8⁵ + 7⁷ + 0 + 9 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2568701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36144 + ... + 36214.

It is an arithmetic number, because the mean of its divisors is an integer number (134064).

2^2568709 is an apocalyptic number.

It is an amenable number.

2568709 is a deficient number, since it is larger than the sum of its proper divisors (648827).

2568709 is a wasteful number, since it uses less digits than its factorization.

2568709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 2568709 is about 1602.7192517718. The cubic root of 2568709 is about 136.9530270348.

It can be divided in two parts, 2 and 568709, that added together give a triangular number (568711 = T₁₀₆₆).

The spelling of 2568709 in words is "two million, five hundred sixty-eight thousand, seven hundred nine".