4066804 has 18 divisors (see below), whose sum is σ = 8279250. Its totient is φ = 1742832.

The previous prime is 4066801. The next prime is 4066807. The reversal of 4066804 is 4086604.

It is an interprime number because it is at equal distance from previous prime (4066801) and next prime (4066807).

It can be written as a sum of positive squares in only one way, i.e., 2371600 + 1695204 = 1540^2 + 1302^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4066801) 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 5 ways as a sum of consecutive naturals, for example, 10179 + ... + 10570.

Almost surely, 2^4066804 is an apocalyptic number.

It is an amenable number.

4066804 is an abundant number, since it is smaller than the sum of its proper divisors (4212446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4066804 is a wasteful number, since it uses less digits than its factorization.

4066804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20767 (or 20758 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 4066804 is about 2016.6318454294. The cubic root of 4066804 is about 159.6189369138.

The spelling of 4066804 in words is "four million, sixty-six thousand, eight hundred four".