2256656 has 10 divisors (see below), whose sum is σ = 4372302. Its totient is φ = 1128320.

The previous prime is 2256637. The next prime is 2256673. The reversal of 2256656 is 6566522.

It can be written as a sum of positive squares in only one way, i.e., 1175056 + 1081600 = 1084^2 + 1040^2 .

It is a d-powerful number, because it can be written as 2¹⁶ + 2²¹ + 5² + 6 + 6⁶ + 5⁴ + 6⁶ .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70505 + ... + 70536.

2^2256656 is an apocalyptic number.

It is an amenable number.

2256656 is a deficient number, since it is larger than the sum of its proper divisors (2115646).

2256656 is a wasteful number, since it uses less digits than its factorization.

2256656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141049 (or 141043 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 2256656 is about 1502.2170282619. The cubic root of 2256656 is about 131.1661547638.

It can be divided in two parts, 22566 and 56, that added together give a palindrome (22622).

The spelling of 2256656 in words is "two million, two hundred fifty-six thousand, six hundred fifty-six".