2249645 has 4 divisors (see below), whose sum is σ = 2699580. Its totient is φ = 1799712.

The previous prime is 2249633. The next prime is 2249693. The reversal of 2249645 is 5469422.

2249645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 391876 + 1857769 = 626^2 + 1363^2 .

It is a cyclic number.

It is not a de Polignac number, because 2249645 - 2¹² = 2245549 is a prime.

It is a super-3 number, since 3×2249645³ = 34155702864372033375, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224960 + ... + 224969.

It is an arithmetic number, because the mean of its divisors is an integer number (674895).

2^2249645 is an apocalyptic number.

It is an amenable number.

2249645 is a deficient number, since it is larger than the sum of its proper divisors (449935).

2249645 is an equidigital number, since it uses as much as digits as its factorization.

2249645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449934.

The product of its digits is 17280, while the sum is 32.

The square root of 2249645 is about 1499.8816619987. The cubic root of 2249645 is about 131.0301777687.

The spelling of 2249645 in words is "two million, two hundred forty-nine thousand, six hundred forty-five".