2256679 has 4 divisors (see below), whose sum is σ = 2259760. Its totient is φ = 2253600.

The previous prime is 2256677. The next prime is 2256689. The reversal of 2256679 is 9766522.

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 not a de Polignac number, because 2256679 - 2¹ = 2256677 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 2¹⁹ + 5⁵ + 6⁶ + 6⁸ + 7⁴ + 9² .

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262 + ... + 2140.

It is an arithmetic number, because the mean of its divisors is an integer number (564940).

2^2256679 is an apocalyptic number.

2256679 is a deficient number, since it is larger than the sum of its proper divisors (3081).

2256679 is a wasteful number, since it uses less digits than its factorization.

2256679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080.

The product of its digits is 45360, while the sum is 37.

The square root of 2256679 is about 1502.2246835943. The cubic root of 2256679 is about 131.1666003805.

The spelling of 2256679 in words is "two million, two hundred fifty-six thousand, six hundred seventy-nine".