3658666 has 8 divisors (see below), whose sum is σ = 5986944. Its totient is φ = 1663020.

The previous prime is 3658661. The next prime is 3658667. The reversal of 3658666 is 6668563.

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

It is not an unprimeable number, because it can be changed into a prime (3658661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83130 + ... + 83173.

It is an arithmetic number, because the mean of its divisors is an integer number (748368).

Almost surely, 2^3658666 is an apocalyptic number.

3658666 is a deficient number, since it is larger than the sum of its proper divisors (2328278).

3658666 is a wasteful number, since it uses less digits than its factorization.

3658666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166316.

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

The square root of 3658666 is about 1912.7639687112. The cubic root of 3658666 is about 154.0899289225.

The spelling of 3658666 in words is "three million, six hundred fifty-eight thousand, six hundred sixty-six".