3215865 has 8 divisors (see below), whose sum is σ = 5145408. Its totient is φ = 1715120.

The previous prime is 3215833. The next prime is 3215879. The reversal of 3215865 is 5685123.

3215865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3215865 - 2⁵ = 3215833 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 107181 + ... + 107210.

It is an arithmetic number, because the mean of its divisors is an integer number (643176).

Almost surely, 2^3215865 is an apocalyptic number.

It is an amenable number.

3215865 is a deficient number, since it is larger than the sum of its proper divisors (1929543).

3215865 is a wasteful number, since it uses less digits than its factorization.

3215865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214399.

The product of its digits is 7200, while the sum is 30.

The square root of 3215865 is about 1793.2833016565. The cubic root of 3215865 is about 147.6043884242.

It can be divided in two parts, 32158 and 65, that added together give a palindrome (32223).

The spelling of 3215865 in words is "three million, two hundred fifteen thousand, eight hundred sixty-five".