3243724661 has 8 divisors (see below), whose sum is σ = 3583859904. Its totient is φ = 2920181440.

The previous prime is 3243724657. The next prime is 3243724691. The reversal of 3243724661 is 1664273423.

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 3243724661 - 2² = 3243724657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3243724691) 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, 4147595 + ... + 4148376.

It is an arithmetic number, because the mean of its divisors is an integer number (447982488).

Almost surely, 2^3243724661 is an apocalyptic number.

It is an amenable number.

3243724661 is a deficient number, since it is larger than the sum of its proper divisors (340135243).

3243724661 is a wasteful number, since it uses less digits than its factorization.

3243724661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8296011.

The product of its digits is 145152, while the sum is 38.

The square root of 3243724661 is about 56953.7062973078. The cubic root of 3243724661 is about 1480.2940523895.

The spelling of 3243724661 in words is "three billion, two hundred forty-three million, seven hundred twenty-four thousand, six hundred sixty-one".