4066005 has 8 divisors (see below), whose sum is σ = 6505632. Its totient is φ = 2168528.

The previous prime is 4065989. The next prime is 4066021. The reversal of 4066005 is 5006604.

It is an interprime number because it is at equal distance from previous prime (4065989) and next prime (4066021).

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

It is a cyclic number.

It is not a de Polignac number, because 4066005 - 2⁴ = 4065989 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135519 + ... + 135548.

It is an arithmetic number, because the mean of its divisors is an integer number (813204).

Almost surely, 2^4066005 is an apocalyptic number.

It is an amenable number.

4066005 is a deficient number, since it is larger than the sum of its proper divisors (2439627).

4066005 is a wasteful number, since it uses less digits than its factorization.

4066005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271075.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 4066005 is about 2016.4337331041. The cubic root of 4066005 is about 159.6084828501.

The spelling of 4066005 in words is "four million, sixty-six thousand, five".