2223745 has 8 divisors (see below), whose sum is σ = 2730816. Its totient is φ = 1737456.

The previous prime is 2223743. The next prime is 2223757. The reversal of 2223745 is 5473222.

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

It is a cyclic number.

It is not a de Polignac number, because 2223745 - 2¹ = 2223743 is a prime.

It is a d-powerful number, because it can be written as 2 + 2⁵ + 2¹³ + 3⁵ + 7 + 4⁹ + 5⁹ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2223743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4957 + ... + 5386.

It is an arithmetic number, because the mean of its divisors is an integer number (341352).

2^2223745 is an apocalyptic number.

It is an amenable number.

2223745 is a deficient number, since it is larger than the sum of its proper divisors (507071).

2223745 is a wasteful number, since it uses less digits than its factorization.

2223745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10391.

The product of its digits is 3360, while the sum is 25.

The square root of 2223745 is about 1491.2226527249. Note that the first 3 decimals coincide. The cubic root of 2223745 is about 130.5253886003.

Adding to 2223745 its product of digits (3360), we get a triangular number (2227105 = T₂₁₁₀).

Adding to 2223745 its reverse (5473222), we get a palindrome (7696967).

The spelling of 2223745 in words is "two million, two hundred twenty-three thousand, seven hundred forty-five".