2056605 has 16 divisors (see below), whose sum is σ = 3314304. Its totient is φ = 1088960.

The previous prime is 2056603. The next prime is 2056627. The reversal of 2056605 is 5066502.

It is not a de Polignac number, because 2056605 - 2¹ = 2056603 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056603) 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 15 ways as a sum of consecutive naturals, for example, 2095 + ... + 2915.

It is an arithmetic number, because the mean of its divisors is an integer number (207144).

2^2056605 is an apocalyptic number.

It is an amenable number.

2056605 is a deficient number, since it is larger than the sum of its proper divisors (1257699).

2056605 is a wasteful number, since it uses less digits than its factorization.

2056605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 2056605 is about 1434.0868174556. The cubic root of 2056605 is about 127.1696948294.

The spelling of 2056605 in words is "two million, fifty-six thousand, six hundred five".