3660556 has 6 divisors (see below), whose sum is σ = 6405980. Its totient is φ = 1830276.

The previous prime is 3660541. The next prime is 3660563. The reversal of 3660556 is 6550663.

It is a happy number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 457566 + ... + 457573.

Almost surely, 2^3660556 is an apocalyptic number.

It is an amenable number.

3660556 is a deficient number, since it is larger than the sum of its proper divisors (2745424).

3660556 is a wasteful number, since it uses less digits than its factorization.

3660556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915143 (or 915141 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 3660556 is about 1913.2579543804. The cubic root of 3660556 is about 154.1164577022.

The spelling of 3660556 in words is "three million, six hundred sixty thousand, five hundred fifty-six".