2249665 has 8 divisors (see below), whose sum is σ = 2945088. Its totient is φ = 1636080.

The previous prime is 2249633. The next prime is 2249693. The reversal of 2249665 is 5669422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2249665 - 2⁵ = 2249633 is a prime.

It is a super-2 number, since 2×2249665² = 10121985224450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2249665.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20397 + ... + 20506.

It is an arithmetic number, because the mean of its divisors is an integer number (368136).

2^2249665 is an apocalyptic number.

It is an amenable number.

2249665 is a deficient number, since it is larger than the sum of its proper divisors (695423).

2249665 is a wasteful number, since it uses less digits than its factorization.

2249665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40919.

The product of its digits is 25920, while the sum is 34.

The square root of 2249665 is about 1499.8883291765. Note that the first 3 decimals coincide. The cubic root of 2249665 is about 131.0305660664.

It can be divided in two parts, 2249 and 665, that multiplied together give a triangular number (1495585 = T₁₇₂₉).

The spelling of 2249665 in words is "two million, two hundred forty-nine thousand, six hundred sixty-five".