2066004 has 18 divisors (see below), whose sum is σ = 5222490. Its totient is φ = 688656.

The previous prime is 2065997. The next prime is 2066017. The reversal of 2066004 is 4006602.

2066004 is a `hidden beast` number, since 2 + 0 + 660 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1904400 + 161604 = 1380^2 + 402^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28659 + ... + 28730.

2^2066004 is an apocalyptic number.

It is an amenable number.

2066004 is an abundant number, since it is smaller than the sum of its proper divisors (3156486).

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

2066004 is a wasteful number, since it uses less digits than its factorization.

2066004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57399 (or 57394 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2066004 is about 1437.3600801469. The cubic root of 2066004 is about 127.3631287846.

The spelling of 2066004 in words is "two million, sixty-six thousand, four", and thus it is an eban number.