2064209 has 4 divisors (see below), whose sum is σ = 2359104. Its totient is φ = 1769316.

The previous prime is 2064199. The next prime is 2064229. The reversal of 2064209 is 9024602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2064209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2064229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147437 + ... + 147450.

It is an arithmetic number, because the mean of its divisors is an integer number (589776).

2^2064209 is an apocalyptic number.

It is an amenable number.

2064209 is a deficient number, since it is larger than the sum of its proper divisors (294895).

2064209 is an equidigital number, since it uses as much as digits as its factorization.

2064209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294894.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2064209 is about 1436.7355358590. The cubic root of 2064209 is about 127.3262325899.

The spelling of 2064209 in words is "two million, sixty-four thousand, two hundred nine".