2236564 has 18 divisors (see below), whose sum is σ = 4303082. Its totient is φ = 1016400.

The previous prime is 2236519. The next prime is 2236573. The reversal of 2236564 is 4656322.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1800964 + 435600 = 1342^2 + 660^2 .

It is a d-powerful number, because it can be written as 2¹⁵ + 2²¹ + 3⁹ + 6² + 5⁷ + 6⁵ + 4⁵ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1827 + ... + 2794.

2^2236564 is an apocalyptic number.

It is an amenable number.

2236564 is a deficient number, since it is larger than the sum of its proper divisors (2066518).

2236564 is a wasteful number, since it uses less digits than its factorization.

2236564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4647 (or 4634 counting only the distinct ones).

The product of its digits is 8640, while the sum is 28.

The square root of 2236564 is about 1495.5146271434. The cubic root of 2236564 is about 130.7757170769.

It can be divided in two parts, 22 and 36564, that multiplied together give a palindrome (804408).

The spelling of 2236564 in words is "two million, two hundred thirty-six thousand, five hundred sixty-four".