2265613 has 6 divisors (see below), whose sum is σ = 2635566. Its totient is φ = 1941912.

The previous prime is 2265611. The next prime is 2265623. The reversal of 2265613 is 3165622.

It can be written as a sum of positive squares in only one way, i.e., 2244004 + 21609 = 1498^2 + 147^2 .

It is not a de Polignac number, because 2265613 - 2¹ = 2265611 is a prime.

It is a d-powerful number, because it can be written as 2⁸ + 2⁸ + 6³ + 5⁸ + 6⁷ + 1 + 3¹³ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2265611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23070 + ... + 23167.

It is an arithmetic number, because the mean of its divisors is an integer number (439261).

2^2265613 is an apocalyptic number.

It is an amenable number.

2265613 is a deficient number, since it is larger than the sum of its proper divisors (369953).

2265613 is an equidigital number, since it uses as much as digits as its factorization.

2265613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46251 (or 46244 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 2265613 is about 1505.1953361607. The cubic root of 2265613 is about 131.3394649294.

Subtracting 2265613 from its reverse (3165622), we obtain a palindrome (900009).

It can be divided in two parts, 22656 and 13, that multiplied together give a triangular number (294528 = T₇₆₇).

The spelling of 2265613 in words is "two million, two hundred sixty-five thousand, six hundred thirteen".