3720355 has 4 divisors (see below), whose sum is σ = 4464432. Its totient is φ = 2976280.

The previous prime is 3720349. The next prime is 3720359. The reversal of 3720355 is 5530273.

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

It is not a de Polignac number, because 3720355 - 2¹¹ = 3718307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3720359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372031 + ... + 372040.

It is an arithmetic number, because the mean of its divisors is an integer number (1116108).

Almost surely, 2^3720355 is an apocalyptic number.

3720355 is a deficient number, since it is larger than the sum of its proper divisors (744077).

3720355 is an equidigital number, since it uses as much as digits as its factorization.

3720355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744076.

The product of its (nonzero) digits is 3150, while the sum is 25.

The square root of 3720355 is about 1928.8221794660. The cubic root of 3720355 is about 154.9511465879.

The spelling of 3720355 in words is "three million, seven hundred twenty thousand, three hundred fifty-five".