2206445 has 8 divisors (see below), whose sum is σ = 2655744. Its totient is φ = 1759824.

The previous prime is 2206441. The next prime is 2206453. The reversal of 2206445 is 5446022.

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 2206445 - 2² = 2206441 is a prime.

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 2206445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2206441) 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, 2672 + ... + 3398.

It is an arithmetic number, because the mean of its divisors is an integer number (331968).

2^2206445 is an apocalyptic number.

It is an amenable number.

2206445 is a deficient number, since it is larger than the sum of its proper divisors (449299).

2206445 is an equidigital number, since it uses as much as digits as its factorization.

2206445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 2206445 is about 1485.4107176131. The cubic root of 2206445 is about 130.1860255899.

The spelling of 2206445 in words is "two million, two hundred six thousand, four hundred forty-five".