2256769 has 8 divisors (see below), whose sum is σ = 2385152. Its totient is φ = 2131920.

The previous prime is 2256743. The next prime is 2256781. The reversal of 2256769 is 9676522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2256769 - 2²¹ = 159617 is a prime.

It is a super-2 number, since 2×2256769² = 10186012638722, which contains 22 as substring.

It is a Duffinian number.

2256769 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2256739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487 + ... + 2179.

It is an arithmetic number, because the mean of its divisors is an integer number (298144).

2^2256769 is an apocalyptic number.

It is an amenable number.

2256769 is a deficient number, since it is larger than the sum of its proper divisors (128383).

2256769 is a wasteful number, since it uses less digits than its factorization.

2256769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1767.

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

The square root of 2256769 is about 1502.2546388679. The cubic root of 2256769 is about 131.1683440692.

It can be divided in two parts, 2256 and 769, that added together give a square (3025 = 55²).

The spelling of 2256769 in words is "two million, two hundred fifty-six thousand, seven hundred sixty-nine".