3720347 has 4 divisors (see below), whose sum is σ = 3767520. Its totient is φ = 3673176.

The previous prime is 3720337. The next prime is 3720349. The reversal of 3720347 is 7430273.

3720347 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7430273 = 19 ⋅391067.

It is a cyclic number.

It is not a de Polignac number, because 3720347 - 2¹⁰ = 3719323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3720349) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 23468 + ... + 23625.

It is an arithmetic number, because the mean of its divisors is an integer number (941880).

Almost surely, 2^3720347 is an apocalyptic number.

3720347 is a deficient number, since it is larger than the sum of its proper divisors (47173).

3720347 is an equidigital number, since it uses as much as digits as its factorization.

3720347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47172.

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 3720347 is about 1928.8201056605. The cubic root of 3720347 is about 154.9510355223.

Adding to 3720347 its product of nonzero digits (3528), we get a cube (3723875 = 155³).

The spelling of 3720347 in words is "three million, seven hundred twenty thousand, three hundred forty-seven".