3656218 has 16 divisors (see below), whose sum is σ = 5821056. Its totient is φ = 1718640.

The previous prime is 3656183. The next prime is 3656231. The reversal of 3656218 is 8126563.

It is a self number, because there is not a number n which added to its sum of digits gives 3656218.

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, 2155 + ... + 3457.

It is an arithmetic number, because the mean of its divisors is an integer number (363816).

Almost surely, 2^3656218 is an apocalyptic number.

3656218 is a deficient number, since it is larger than the sum of its proper divisors (2164838).

3656218 is a wasteful number, since it uses less digits than its factorization.

3656218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389.

The product of its digits is 8640, while the sum is 31.

The square root of 3656218 is about 1912.1239499572. The cubic root of 3656218 is about 154.0555542527.

The spelling of 3656218 in words is "three million, six hundred fifty-six thousand, two hundred eighteen".