4065217 has 4 divisors (see below), whose sum is σ = 4377940. Its totient is φ = 3752496.

The previous prime is 4065211. The next prime is 4065241. The reversal of 4065217 is 7125604.

4065217 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.

It can be written as a sum of positive squares in 2 ways, for example, as 646416 + 3418801 = 804^2 + 1849^2 .

It is a cyclic number.

It is not a de Polignac number, because 4065217 - 2³ = 4065209 is a prime.

It is a Duffinian number.

4065217 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4065191 and 4065200.

It is not an unprimeable number, because it can be changed into a prime (4065211) 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, 156342 + ... + 156367.

It is an arithmetic number, because the mean of its divisors is an integer number (1094485).

Almost surely, 2^4065217 is an apocalyptic number.

It is an amenable number.

4065217 is a deficient number, since it is larger than the sum of its proper divisors (312723).

4065217 is a wasteful number, since it uses less digits than its factorization.

4065217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312722.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 4065217 is about 2016.2383291665. The cubic root of 4065217 is about 159.5981713683.

The spelling of 4065217 in words is "four million, sixty-five thousand, two hundred seventeen".