3720071 has 4 divisors (see below), whose sum is σ = 3735144. Its totient is φ = 3705000.

The previous prime is 3720037. The next prime is 3720103. The reversal of 3720071 is 1700273.

3720071 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: 1700273 = 523 ⋅3251.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3720071 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3720011) 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, 7160 + ... + 7661.

It is an arithmetic number, because the mean of its divisors is an integer number (933786).

Almost surely, 2^3720071 is an apocalyptic number.

3720071 is a deficient number, since it is larger than the sum of its proper divisors (15073).

3720071 is a wasteful number, since it uses less digits than its factorization.

3720071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15072.

The product of its (nonzero) digits is 294, while the sum is 20.

The square root of 3720071 is about 1928.7485580033. The cubic root of 3720071 is about 154.9472036626.

The spelling of 3720071 in words is "three million, seven hundred twenty thousand, seventy-one".