2000865 has 8 divisors (see below), whose sum is σ = 3201408. Its totient is φ = 1067120.

The previous prime is 2000863. The next prime is 2000903. The reversal of 2000865 is 5680002.

It is a happy number.

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

It is not a de Polignac number, because 2000865 - 2¹ = 2000863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2000863) 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, 66681 + ... + 66710.

It is an arithmetic number, because the mean of its divisors is an integer number (400176).

2^2000865 is an apocalyptic number.

It is an amenable number.

2000865 is a deficient number, since it is larger than the sum of its proper divisors (1200543).

2000865 is a wasteful number, since it uses less digits than its factorization.

2000865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133399.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2000865 is about 1414.5193529959. The cubic root of 2000865 is about 126.0102662333.

Adding to 2000865 its reverse (5680002), we get a palindrome (7680867).

The spelling of 2000865 in words is "two million, eight hundred sixty-five", and thus it is an aban number.