2256659 has 4 divisors (see below), whose sum is σ = 2259840. Its totient is φ = 2253480.

The previous prime is 2256637. The next prime is 2256673. The reversal of 2256659 is 9566522.

2256659 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2256659 is a prime.

It is a d-powerful number, because it can be written as 2¹⁶ + 2²¹ + 5² + 6⁶ + 6⁶ + 5⁴ + 9 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2256619) 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 in 3 ways as a sum of consecutive naturals, for example, 14 + ... + 2124.

It is an arithmetic number, because the mean of its divisors is an integer number (564960).

2^2256659 is an apocalyptic number.

2256659 is a deficient number, since it is larger than the sum of its proper divisors (3181).

2256659 is a wasteful number, since it uses less digits than its factorization.

2256659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3180.

The product of its digits is 32400, while the sum is 35.

The square root of 2256659 is about 1502.2180267857. The cubic root of 2256659 is about 131.1662128879.

The spelling of 2256659 in words is "two million, two hundred fifty-six thousand, six hundred fifty-nine".