3205990368 has 336 divisors, whose sum is σ = 11204736480. Its totient is φ = 883104768.

The previous prime is 3205990343. The next prime is 3205990409. The reversal of 3205990368 is 8630995023.

3205990368 is a `hidden beast` number, since 3 + 20 + 599 + 0 + 36 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 4735246 + ... + 4735922.

It is an arithmetic number, because the mean of its divisors is an integer number (33347430).

Almost surely, 2^3205990368 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 3205990368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5602368240).

3205990368 is an abundant number, since it is smaller than the sum of its proper divisors (7998746112).

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

3205990368 is an equidigital number, since it uses as much as digits as its factorization.

3205990368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 3205990368 is about 56621.4656115505. The cubic root of 3205990368 is about 1474.5315556189.

The spelling of 3205990368 in words is "three billion, two hundred five million, nine hundred ninety thousand, three hundred sixty-eight".