3261568 has 32 divisors (see below), whose sum is σ = 6597360. Its totient is φ = 1605888.

The previous prime is 3261553. The next prime is 3261581. The reversal of 3261568 is 8651623.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10471 + ... + 10777.

Almost surely, 2^3261568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3261568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3298680).

3261568 is an abundant number, since it is smaller than the sum of its proper divisors (3335792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3261568 is an equidigital number, since it uses as much as digits as its factorization.

3261568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 392 counting only the distinct ones).

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

The square root of 3261568 is about 1805.9811737668. The cubic root of 3261568 is about 148.3003396999.

The spelling of 3261568 in words is "three million, two hundred sixty-one thousand, five hundred sixty-eight".