2245636 has 6 divisors (see below), whose sum is σ = 3929870. Its totient is φ = 1122816.

The previous prime is 2245631. The next prime is 2245637. The reversal of 2245636 is 6365422.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1512900 + 732736 = 1230^2 + 856^2 .

It is a d-powerful number, because it can be written as 2³ + 2¹³ + 4⁶ + 5⁹ + 6² + 3⁵ + 6⁷ .

It is not an unprimeable number, because it can be changed into a prime (2245631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280701 + ... + 280708.

2^2245636 is an apocalyptic number.

It is an amenable number.

2245636 is a deficient number, since it is larger than the sum of its proper divisors (1684234).

2245636 is a wasteful number, since it uses less digits than its factorization.

2245636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561413 (or 561411 counting only the distinct ones).

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

The square root of 2245636 is about 1498.5446272968. The cubic root of 2245636 is about 130.9522969875.

The spelling of 2245636 in words is "two million, two hundred forty-five thousand, six hundred thirty-six".