2659509 has 12 divisors (see below), whose sum is σ = 3855852. Its totient is φ = 1766400.

The previous prime is 2659493. The next prime is 2659511. The reversal of 2659509 is 9059562.

It can be written as a sum of positive squares in 2 ways, for example, as 1703025 + 956484 = 1305^2 + 978^2 .

It is not a de Polignac number, because 2659509 - 2⁴ = 2659493 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2659519) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3829 + ... + 4469.

It is an arithmetic number, because the mean of its divisors is an integer number (321321).

2^2659509 is an apocalyptic number.

It is an amenable number.

2659509 is a deficient number, since it is larger than the sum of its proper divisors (1196343).

2659509 is a wasteful number, since it uses less digits than its factorization.

2659509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108 (or 1105 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 2659509 is about 1630.8001103753. The cubic root of 2659509 is about 138.5480724747.

The spelling of 2659509 in words is "two million, six hundred fifty-nine thousand, five hundred nine".