2205397 has 4 divisors (see below), whose sum is σ = 2225740. Its totient is φ = 2185056.

The previous prime is 2205389. The next prime is 2205409. The reversal of 2205397 is 7935022.

2205397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1347921 + 857476 = 1161^2 + 926^2 .

It is a cyclic number.

It is not a de Polignac number, because 2205397 - 2³ = 2205389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2200397) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10008 + ... + 10225.

It is an arithmetic number, because the mean of its divisors is an integer number (556435).

2^2205397 is an apocalyptic number.

It is an amenable number.

2205397 is a deficient number, since it is larger than the sum of its proper divisors (20343).

2205397 is a wasteful number, since it uses less digits than its factorization.

2205397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20342.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 2205397 is about 1485.0579113287. The cubic root of 2205397 is about 130.1654107455.

The spelling of 2205397 in words is "two million, two hundred five thousand, three hundred ninety-seven".