4066985 has 12 divisors (see below), whose sum is σ = 5285772. Its totient is φ = 3002688.

The previous prime is 4066981. The next prime is 4066987. The reversal of 4066985 is 5896604.

It can be written as a sum of positive squares in 6 ways, for example, as 430336 + 3636649 = 656^2 + 1907^2 .

It is not a de Polignac number, because 4066985 - 2² = 4066981 is a prime.

It is a super-3 number, since 3×4066985³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4066981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1562 + ... + 3251.

It is an arithmetic number, because the mean of its divisors is an integer number (440481).

Almost surely, 2^4066985 is an apocalyptic number.

It is an amenable number.

4066985 is a deficient number, since it is larger than the sum of its proper divisors (1218787).

4066985 is a wasteful number, since it uses less digits than its factorization.

4066985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4844 (or 4831 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 4066985 is about 2016.6767217380. The cubic root of 4066985 is about 159.6213049157.

The spelling of 4066985 in words is "four million, sixty-six thousand, nine hundred eighty-five".