2064091 has 4 divisors (see below), whose sum is σ = 2067832. Its totient is φ = 2060352.

The previous prime is 2064077. The next prime is 2064109. The reversal of 2064091 is 1904602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2064091 - 2¹¹ = 2062043 is a prime.

It is a Duffinian number.

2064091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2064031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 861 + ... + 2206.

It is an arithmetic number, because the mean of its divisors is an integer number (516958).

2^2064091 is an apocalyptic number.

2064091 is a deficient number, since it is larger than the sum of its proper divisors (3741).

2064091 is an equidigital number, since it uses as much as digits as its factorization.

2064091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3740.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 2064091 is about 1436.6944699553. The cubic root of 2064091 is about 127.3238063527.

Adding to 2064091 its reverse (1904602), we get a palindrome (3968693).

The spelling of 2064091 in words is "two million, sixty-four thousand, ninety-one".