3261967616 has 72 divisors (see below), whose sum is σ = 7054939584. Its totient is φ = 1499258880.

The previous prime is 3261967559. The next prime is 3261967661. The reversal of 3261967616 is 6167691623.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178421 + ... + 195851.

It is an arithmetic number, because the mean of its divisors is an integer number (97985272).

Almost surely, 2^3261967616 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 3261967616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3527469792).

3261967616 is an abundant number, since it is smaller than the sum of its proper divisors (3792971968).

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

3261967616 is a wasteful number, since it uses less digits than its factorization.

3261967616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17507 (or 17493 counting only the distinct ones).

The product of its digits is 489888, while the sum is 47.

The square root of 3261967616 is about 57113.6377409109. The cubic root of 3261967616 is about 1483.0639617013.

The spelling of 3261967616 in words is "three billion, two hundred sixty-one million, nine hundred sixty-seven thousand, six hundred sixteen".