2206385 has 8 divisors (see below), whose sum is σ = 2667816. Its totient is φ = 1751680.

The previous prime is 2206357. The next prime is 2206387. The reversal of 2206385 is 5836022.

It can be written as a sum of positive squares in 4 ways, for example, as 524176 + 1682209 = 724^2 + 1297^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2206385 - 2¹⁶ = 2140849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2206387) 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, 926 + ... + 2295.

It is an arithmetic number, because the mean of its divisors is an integer number (333477).

2^2206385 is an apocalyptic number.

It is an amenable number.

2206385 is a deficient number, since it is larger than the sum of its proper divisors (461431).

2206385 is a wasteful number, since it uses less digits than its factorization.

2206385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3363.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2206385 is about 1485.3905210415. The cubic root of 2206385 is about 130.1848455269.

The spelling of 2206385 in words is "two million, two hundred six thousand, three hundred eighty-five".