3666004 has 6 divisors (see below), whose sum is σ = 6415514. Its totient is φ = 1833000.

The previous prime is 3666001. The next prime is 3666007. The reversal of 3666004 is 4006663.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3666001) and next prime (3666007).

It can be written as a sum of positive squares in only one way, i.e., 3617604 + 48400 = 1902^2 + 220^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3666004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3666001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 458247 + ... + 458254.

Almost surely, 2^3666004 is an apocalyptic number.

It is an amenable number.

3666004 is a deficient number, since it is larger than the sum of its proper divisors (2749510).

3666004 is a wasteful number, since it uses less digits than its factorization.

3666004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916505 (or 916503 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 3666004 is about 1914.6811745040. The cubic root of 3666004 is about 154.1928769007.

The spelling of 3666004 in words is "three million, six hundred sixty-six thousand, four".