3720505 has 8 divisors (see below), whose sum is σ = 4521600. Its totient is φ = 2938416.

The previous prime is 3720491. The next prime is 3720511. The reversal of 3720505 is 5050273.

3720505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3720505 - 2⁹ = 3719993 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4315 + ... + 5104.

It is an arithmetic number, because the mean of its divisors is an integer number (565200).

Almost surely, 2^3720505 is an apocalyptic number.

It is an amenable number.

3720505 is a deficient number, since it is larger than the sum of its proper divisors (801095).

3720505 is an equidigital number, since it uses as much as digits as its factorization.

3720505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9503.

The product of its (nonzero) digits is 1050, while the sum is 22.

The square root of 3720505 is about 1928.8610629073. The cubic root of 3720505 is about 154.9532290379.

Adding to 3720505 its reverse (5050273), we get a palindrome (8770778).

It can be divided in two parts, 3720 and 505, that added together give a square (4225 = 65²).

The spelling of 3720505 in words is "three million, seven hundred twenty thousand, five hundred five".