4071065 has 4 divisors (see below), whose sum is σ = 4885284. Its totient is φ = 3256848.

The previous prime is 4071061. The next prime is 4071071. The reversal of 4071065 is 5601704.

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 2876416 + 1194649 = 1696^2 + 1093^2 .

It is a cyclic number.

It is not a de Polignac number, because 4071065 - 2² = 4071061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4071065.

It is not an unprimeable number, because it can be changed into a prime (4071061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407102 + ... + 407111.

It is an arithmetic number, because the mean of its divisors is an integer number (1221321).

Almost surely, 2^4071065 is an apocalyptic number.

It is an amenable number.

4071065 is a deficient number, since it is larger than the sum of its proper divisors (814219).

4071065 is an equidigital number, since it uses as much as digits as its factorization.

4071065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814218.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 4071065 is about 2017.6880333689. The cubic root of 4071065 is about 159.6746644491.

Adding to 4071065 its reverse (5601704), we get a palindrome (9672769).

It can be divided in two parts, 40710 and 65, that multiplied together give a triangular number (2646150 = T₂₃₀₀).

The spelling of 4071065 in words is "four million, seventy-one thousand, sixty-five".