3720205 has 8 divisors (see below), whose sum is σ = 4476672. Its totient is φ = 2967888.

The previous prime is 3720179. The next prime is 3720209. The reversal of 3720205 is 5020273.

It is a happy number.

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 3720205 - 2⁹ = 3719693 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 (3720209) 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, 1512 + ... + 3118.

It is an arithmetic number, because the mean of its divisors is an integer number (559584).

Almost surely, 2^3720205 is an apocalyptic number.

It is an amenable number.

3720205 is a deficient number, since it is larger than the sum of its proper divisors (756467).

3720205 is a wasteful number, since it uses less digits than its factorization.

3720205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 3720205 is about 1928.7832952408. The cubic root of 3720205 is about 154.9490640819.

Adding to 3720205 its reverse (5020273), we get a palindrome (8740478).

The spelling of 3720205 in words is "three million, seven hundred twenty thousand, two hundred five".