3620205 has 12 divisors (see below), whose sum is σ = 6275100. Its totient is φ = 1930752.

The previous prime is 3620161. The next prime is 3620207. The reversal of 3620205 is 5020263.

It can be written as a sum of positive squares in 2 ways, for example, as 1397124 + 2223081 = 1182^2 + 1491^2 .

It is not a de Polignac number, because 3620205 - 2¹¹ = 3618157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3620207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40180 + ... + 40269.

It is an arithmetic number, because the mean of its divisors is an integer number (522925).

Almost surely, 2^3620205 is an apocalyptic number.

It is an amenable number.

3620205 is a deficient number, since it is larger than the sum of its proper divisors (2654895).

3620205 is a wasteful number, since it uses less digits than its factorization.

3620205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80460 (or 80457 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 3620205 is about 1902.6836310853. The cubic root of 3620205 is about 153.5480791718.

Adding to 3620205 its reverse (5020263), we get a palindrome (8640468).

The spelling of 3620205 in words is "three million, six hundred twenty thousand, two hundred five".