3666586 has 32 divisors (see below), whose sum is σ = 7102080. Its totient is φ = 1377600.

The previous prime is 3666583. The next prime is 3666599. The reversal of 3666586 is 6856663.

It is not an unprimeable number, because it can be changed into a prime (3666581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4056 + ... + 4876.

It is an arithmetic number, because the mean of its divisors is an integer number (221940).

Almost surely, 2^3666586 is an apocalyptic number.

3666586 is a deficient number, since it is larger than the sum of its proper divisors (3435494).

3666586 is a wasteful number, since it uses less digits than its factorization.

3666586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870.

The product of its digits is 155520, while the sum is 40.

The square root of 3666586 is about 1914.8331520005. The cubic root of 3666586 is about 154.2010361486.

The spelling of 3666586 in words is "three million, six hundred sixty-six thousand, five hundred eighty-six".