3212865 has 20 divisors (see below), whose sum is σ = 5760084. Its totient is φ = 1713312.

The previous prime is 3212863. The next prime is 3212927. The reversal of 3212865 is 5682123.

It can be written as a sum of positive squares in 2 ways, for example, as 1034289 + 2178576 = 1017^2 + 1476^2 .

It is not a de Polignac number, because 3212865 - 2¹ = 3212863 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (3212861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3562 + ... + 4371.

Almost surely, 2^3212865 is an apocalyptic number.

It is an amenable number.

3212865 is a deficient number, since it is larger than the sum of its proper divisors (2547219).

3212865 is an equidigital number, since it uses as much as digits as its factorization.

3212865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7950 (or 7941 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 3212865 is about 1792.4466519258. The cubic root of 3212865 is about 147.5584753306.

Adding to 3212865 its reverse (5682123), we get a palindrome (8894988).

The spelling of 3212865 in words is "three million, two hundred twelve thousand, eight hundred sixty-five".