2205705 has 8 divisors (see below), whose sum is σ = 3529152. Its totient is φ = 1176368.

The previous prime is 2205703. The next prime is 2205713. The reversal of 2205705 is 5075022.

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 2205705 - 2¹ = 2205703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2205703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73509 + ... + 73538.

It is an arithmetic number, because the mean of its divisors is an integer number (441144).

2^2205705 is an apocalyptic number.

It is an amenable number.

2205705 is a deficient number, since it is larger than the sum of its proper divisors (1323447).

2205705 is a wasteful number, since it uses less digits than its factorization.

2205705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147055.

The product of its (nonzero) digits is 700, while the sum is 21.

The square root of 2205705 is about 1485.1616073680. The cubic root of 2205705 is about 130.1714699841.

The spelling of 2205705 in words is "two million, two hundred five thousand, seven hundred five".