4145065 has 4 divisors (see below), whose sum is σ = 4974084. Its totient is φ = 3316048.

The previous prime is 4145047. The next prime is 4145069. The reversal of 4145065 is 5605414.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5605414 = 2 ⋅2802707.

It can be written as a sum of positive squares in 2 ways, for example, as 1172889 + 2972176 = 1083^2 + 1724^2 .

It is a cyclic number.

It is not a de Polignac number, because 4145065 - 2⁵ = 4145033 is a prime.

It is a Duffinian number.

4145065 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4145069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414502 + ... + 414511.

It is an arithmetic number, because the mean of its divisors is an integer number (1243521).

Almost surely, 2^4145065 is an apocalyptic number.

It is an amenable number.

4145065 is a deficient number, since it is larger than the sum of its proper divisors (829019).

4145065 is an equidigital number, since it uses as much as digits as its factorization.

4145065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829018.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 4145065 is about 2035.9432703295. The cubic root of 4145065 is about 160.6363330838.

The spelling of 4145065 in words is "four million, one hundred forty-five thousand, sixty-five".