3639218 has 16 divisors (see below), whose sum is σ = 6029856. Its totient is φ = 1633440.

The previous prime is 3639217. The next prime is 3639277. The reversal of 3639218 is 8129363.

It is not an unprimeable number, because it can be changed into a prime (3639211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 830 + ... + 2822.

It is an arithmetic number, because the mean of its divisors is an integer number (376866).

Almost surely, 2^3639218 is an apocalyptic number.

3639218 is a deficient number, since it is larger than the sum of its proper divisors (2390638).

3639218 is a wasteful number, since it uses less digits than its factorization.

3639218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2089.

The product of its digits is 7776, while the sum is 32.

The square root of 3639218 is about 1907.6734521401. The cubic root of 3639218 is about 153.8164169833.

The spelling of 3639218 in words is "three million, six hundred thirty-nine thousand, two hundred eighteen".