2285765 has 4 divisors (see below), whose sum is σ = 2742924. Its totient is φ = 1828608.

The previous prime is 2285747. The next prime is 2285779. The reversal of 2285765 is 5675822.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1216609 + 1069156 = 1103^2 + 1034^2 .

It is a cyclic number.

It is not a de Polignac number, because 2285765 - 2⁸ = 2285509 is a prime.

It is a d-powerful number, because it can be written as 2 + 2 + 8⁵ + 5⁵ + 7⁵ + 6⁷ + 5⁹ .

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228572 + ... + 228581.

It is an arithmetic number, because the mean of its divisors is an integer number (685731).

2^2285765 is an apocalyptic number.

It is an amenable number.

2285765 is a deficient number, since it is larger than the sum of its proper divisors (457159).

2285765 is an equidigital number, since it uses as much as digits as its factorization.

2285765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457158.

The product of its digits is 33600, while the sum is 35.

The square root of 2285765 is about 1511.8746641174. The cubic root of 2285765 is about 131.7277254236.

It can be divided in two parts, 22857 and 65, that added together give a palindrome (22922).

The spelling of 2285765 in words is "two million, two hundred eighty-five thousand, seven hundred sixty-five".