2210945 has 16 divisors (see below), whose sum is σ = 2946240. Its totient is φ = 1579200.

The previous prime is 2210939. The next prime is 2210947. The reversal of 2210945 is 5490122.

It is not a de Polignac number, because 2210945 - 2⁶ = 2210881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2210945.

It is not an unprimeable number, because it can be changed into a prime (2210947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3026 + ... + 3684.

It is an arithmetic number, because the mean of its divisors is an integer number (184140).

2^2210945 is an apocalyptic number.

It is an amenable number.

2210945 is a deficient number, since it is larger than the sum of its proper divisors (735295).

2210945 is a wasteful number, since it uses less digits than its factorization.

2210945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2210945 is about 1486.9246786573. The cubic root of 2210945 is about 130.2744694137.

The spelling of 2210945 in words is "two million, two hundred ten thousand, nine hundred forty-five".