2865009 has 8 divisors (see below), whose sum is σ = 4365760. Its totient is φ = 1637136.

The previous prime is 2865007. The next prime is 2865043. The reversal of 2865009 is 9005682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2865009 - 2¹ = 2865007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2865001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68194 + ... + 68235.

It is an arithmetic number, because the mean of its divisors is an integer number (545720).

2^2865009 is an apocalyptic number.

It is an amenable number.

2865009 is a deficient number, since it is larger than the sum of its proper divisors (1500751).

2865009 is a wasteful number, since it uses less digits than its factorization.

2865009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136439.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 2865009 is about 1692.6337465618. The cubic root of 2865009 is about 142.0284443448.

The spelling of 2865009 in words is "two million, eight hundred sixty-five thousand, nine".