2205717 has 4 divisors (see below), whose sum is σ = 2940960. Its totient is φ = 1470476.

The previous prime is 2205713. The next prime is 2205719. The reversal of 2205717 is 7175022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2205717 - 2² = 2205713 is a prime.

It is a D-number.

2205717 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367617 + ... + 367622.

It is an arithmetic number, because the mean of its divisors is an integer number (735240).

2^2205717 is an apocalyptic number.

It is an amenable number.

2205717 is a deficient number, since it is larger than the sum of its proper divisors (735243).

2205717 is an equidigital number, since it uses as much as digits as its factorization.

2205717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735242.

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 2205717 is about 1485.1656473269. The cubic root of 2205717 is about 130.1717060470.

The spelling of 2205717 in words is "two million, two hundred five thousand, seven hundred seventeen".