3666545 has 8 divisors (see below), whose sum is σ = 4591296. Its totient is φ = 2805616.

The previous prime is 3666539. The next prime is 3666581. The reversal of 3666545 is 5456663.

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 3666545 - 2⁴ = 3666529 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15827 + ... + 16056.

It is an arithmetic number, because the mean of its divisors is an integer number (573912).

Almost surely, 2^3666545 is an apocalyptic number.

It is an amenable number.

3666545 is a deficient number, since it is larger than the sum of its proper divisors (924751).

3666545 is a wasteful number, since it uses less digits than its factorization.

3666545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31911.

The product of its digits is 64800, while the sum is 35.

The square root of 3666545 is about 1914.8224460769. The cubic root of 3666545 is about 154.2004613845.

The spelling of 3666545 in words is "three million, six hundred sixty-six thousand, five hundred forty-five".