3660689 has 8 divisors (see below), whose sum is σ = 3794688. Its totient is φ = 3529120.

The previous prime is 3660677. The next prime is 3660707. The reversal of 3660689 is 9860663.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3660689 - 2¹² = 3656593 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3660619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2789 + ... + 3885.

It is an arithmetic number, because the mean of its divisors is an integer number (474336).

Almost surely, 2^3660689 is an apocalyptic number.

It is an amenable number.

3660689 is a deficient number, since it is larger than the sum of its proper divisors (133999).

3660689 is a wasteful number, since it uses less digits than its factorization.

3660689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 3660689 is about 1913.2927115316. The cubic root of 3660689 is about 154.1183241983.

The spelling of 3660689 in words is "three million, six hundred sixty thousand, six hundred eighty-nine".