3289205661 has 16 divisors (see below), whose sum is σ = 5013295104. Its totient is φ = 1879106544.

The previous prime is 3289205657. The next prime is 3289205701. The reversal of 3289205661 is 1665029823.

It is not a de Polignac number, because 3289205661 - 2² = 3289205657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3289205651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87960 + ... + 119646.

It is an arithmetic number, because the mean of its divisors is an integer number (313330944).

Almost surely, 2^3289205661 is an apocalyptic number.

It is an amenable number.

3289205661 is a deficient number, since it is larger than the sum of its proper divisors (1724089443).

3289205661 is a wasteful number, since it uses less digits than its factorization.

3289205661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36640.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 3289205661 is about 57351.5968478647. The cubic root of 3289205661 is about 1487.1804795995.

The spelling of 3289205661 in words is "three billion, two hundred eighty-nine million, two hundred five thousand, six hundred sixty-one".