2065591 has 12 divisors (see below), whose sum is σ = 2329096. Its totient is φ = 1829520.

The previous prime is 2065579. The next prime is 2065597. The reversal of 2065591 is 1955602.

It is not a de Polignac number, because 2065591 - 2⁵ = 2065559 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2065597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5005 + ... + 5401.

2^2065591 is an apocalyptic number.

2065591 is a deficient number, since it is larger than the sum of its proper divisors (263505).

2065591 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (2065590) it forms an eRAP, since the sums of their prime factors are consecutive (461 and 462).

2065591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 2065591 is about 1437.2164068087. The cubic root of 2065591 is about 127.3546414700.

The spelling of 2065591 in words is "two million, sixty-five thousand, five hundred ninety-one".