2213745 has 8 divisors (see below), whose sum is σ = 3542016. Its totient is φ = 1180656.

The previous prime is 2213711. The next prime is 2213759. The reversal of 2213745 is 5473122.

2213745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2213745 - 2⁸ = 2213489 is a prime.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 73777 + ... + 73806.

It is an arithmetic number, because the mean of its divisors is an integer number (442752).

2^2213745 is an apocalyptic number.

It is an amenable number.

2213745 is a deficient number, since it is larger than the sum of its proper divisors (1328271).

2213745 is a wasteful number, since it uses less digits than its factorization.

2213745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147591.

The product of its digits is 1680, while the sum is 24.

The square root of 2213745 is about 1487.8659213787. The cubic root of 2213745 is about 130.3294405744.

Adding to 2213745 its reverse (5473122), we get a palindrome (7686867).

The spelling of 2213745 in words is "two million, two hundred thirteen thousand, seven hundred forty-five".