2265636 has 36 divisors (see below), whose sum is σ = 5590032. Its totient is φ = 714096.

The previous prime is 2265631. The next prime is 2265643. The reversal of 2265636 is 6365622.

It is a d-powerful number, because it can be written as 2⁶ + 2⁸ + 6³ + 5⁸ + 6³ + 3¹³ + 6⁷ .

It is not an unprimeable number, because it can be changed into a prime (2265631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4071 + ... + 4593.

2^2265636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2265636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2795016).

2265636 is an abundant number, since it is smaller than the sum of its proper divisors (3324396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2265636 is a wasteful number, since it uses less digits than its factorization.

2265636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 547 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

The square root of 2265636 is about 1505.2029763457. The cubic root of 2265636 is about 131.3399093709.

The spelling of 2265636 in words is "two million, two hundred sixty-five thousand, six hundred thirty-six".