3218745 has 16 divisors (see below), whose sum is σ = 5238720. Its totient is φ = 1687104.

The previous prime is 3218737. The next prime is 3218749. The reversal of 3218745 is 5478123.

3218745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3218745 - 2³ = 3218737 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3218749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 934 + ... + 2703.

It is an arithmetic number, because the mean of its divisors is an integer number (327420).

Almost surely, 2^3218745 is an apocalyptic number.

It is an amenable number.

3218745 is a deficient number, since it is larger than the sum of its proper divisors (2019975).

3218745 is a wasteful number, since it uses less digits than its factorization.

3218745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3704.

The product of its digits is 6720, while the sum is 30.

The square root of 3218745 is about 1794.0861183343. The cubic root of 3218745 is about 147.6484381383.

The spelling of 3218745 in words is "three million, two hundred eighteen thousand, seven hundred forty-five".