3243545661 has 8 divisors (see below), whose sum is σ = 4327168384. Its totient is φ = 2161143360.

The previous prime is 3243545659. The next prime is 3243545671. The reversal of 3243545661 is 1665453423.

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

It is not a de Polignac number, because 3243545661 - 2¹ = 3243545659 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3243545671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298885 + ... + 309546.

It is an arithmetic number, because the mean of its divisors is an integer number (540896048).

Almost surely, 2^3243545661 is an apocalyptic number.

It is an amenable number.

3243545661 is a deficient number, since it is larger than the sum of its proper divisors (1083622723).

3243545661 is a wasteful number, since it uses less digits than its factorization.

3243545661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610211.

The product of its digits is 259200, while the sum is 39.

The square root of 3243545661 is about 56952.1348239028. The cubic root of 3243545661 is about 1480.2668226318.

The spelling of 3243545661 in words is "three billion, two hundred forty-three million, five hundred forty-five thousand, six hundred sixty-one".