2056786 has 4 divisors (see below), whose sum is σ = 3085182. Its totient is φ = 1028392.

The previous prime is 2056777. The next prime is 2056787. The reversal of 2056786 is 6876502.

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

It can be written as a sum of positive squares in only one way, i.e., 2047761 + 9025 = 1431^2 + 95^2 .

It is not an unprimeable number, because it can be changed into a prime (2056787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514195 + ... + 514198.

2^2056786 is an apocalyptic number.

2056786 is a deficient number, since it is larger than the sum of its proper divisors (1028396).

2056786 is a wasteful number, since it uses less digits than its factorization.

2056786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028395.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 2056786 is about 1434.1499224279. The cubic root of 2056786 is about 127.1734254177.

The spelling of 2056786 in words is "two million, fifty-six thousand, seven hundred eighty-six".