3261643 has 8 divisors (see below), whose sum is σ = 4066560. Its totient is φ = 2541480.

The previous prime is 3261641. The next prime is 3261667. The reversal of 3261643 is 3461623.

3261643 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 a cyclic number.

It is not a de Polignac number, because 3261643 - 2¹ = 3261641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3261641) 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 7 ways as a sum of consecutive naturals, for example, 21103 + ... + 21256.

It is an arithmetic number, because the mean of its divisors is an integer number (508320).

Almost surely, 2^3261643 is an apocalyptic number.

3261643 is a deficient number, since it is larger than the sum of its proper divisors (804917).

3261643 is a wasteful number, since it uses less digits than its factorization.

3261643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42377.

The product of its digits is 2592, while the sum is 25.

The square root of 3261643 is about 1806.0019379835. The cubic root of 3261643 is about 148.3014764170.

The spelling of 3261643 in words is "three million, two hundred sixty-one thousand, six hundred forty-three".