3920065 has 8 divisors (see below), whose sum is σ = 4719528. Its totient is φ = 3125760.

The previous prime is 3920057. The next prime is 3920069. The reversal of 3920065 is 5600293.

3920065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 501264 + 3418801 = 708^2 + 1849^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3920065 - 2³ = 3920057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3920069) 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 7 ways as a sum of consecutive naturals, for example, 655 + ... + 2875.

It is an arithmetic number, because the mean of its divisors is an integer number (589941).

Almost surely, 2^3920065 is an apocalyptic number.

It is an amenable number.

3920065 is a deficient number, since it is larger than the sum of its proper divisors (799463).

3920065 is a wasteful number, since it uses less digits than its factorization.

3920065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2579.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 3920065 is about 1979.9154022331. The cubic root of 3920065 is about 157.6755747586.

The spelling of 3920065 in words is "three million, nine hundred twenty thousand, sixty-five".