4065857 has 2 divisors, whose sum is σ = 4065858. Its totient is φ = 4065856.

The previous prime is 4065823. The next prime is 4065877. The reversal of 4065857 is 7585604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3474496 + 591361 = 1864^2 + 769^2 .

It is a cyclic number.

It is not a de Polignac number, because 4065857 - 2²⁰ = 3017281 is a prime.

It is a super-5 number, since 5×4065857⁵ (a number of 34 digits) contains 55555 as substring. Note that it is a super-d number also for d = 3.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4065877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2032928 + 2032929.

It is an arithmetic number, because the mean of its divisors is an integer number (2032929).

Almost surely, 2^4065857 is an apocalyptic number.

It is an amenable number.

4065857 is a deficient number, since it is larger than the sum of its proper divisors (1).

4065857 is an equidigital number, since it uses as much as digits as its factorization.

4065857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 4065857 is about 2016.3970343164. The cubic root of 4065857 is about 159.6065462775.

The spelling of 4065857 in words is "four million, sixty-five thousand, eight hundred fifty-seven".