2065409 has 8 divisors (see below), whose sum is σ = 2170560. Its totient is φ = 1962576.

The previous prime is 2065397. The next prime is 2065411. The reversal of 2065409 is 9045602.

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

It is a cyclic number.

It is not a de Polignac number, because 2065409 - 2⁸ = 2065153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2065429) 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, 1412 + ... + 2474.

It is an arithmetic number, because the mean of its divisors is an integer number (271320).

2^2065409 is an apocalyptic number.

2065409 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2065409 is a deficient number, since it is larger than the sum of its proper divisors (105151).

2065409 is a wasteful number, since it uses less digits than its factorization.

2065409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 2065409 is about 1437.1530885748. The cubic root of 2065409 is about 127.3509009383.

The spelling of 2065409 in words is "two million, sixty-five thousand, four hundred nine".