3281660 has 48 divisors (see below), whose sum is σ = 7311360. Its totient is φ = 1235520.

The previous prime is 3281657. The next prime is 3281687. The reversal of 3281660 is 661823.

3281660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41501 + ... + 41579.

It is an arithmetic number, because the mean of its divisors is an integer number (152320).

Almost surely, 2^3281660 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 3281660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3655680).

3281660 is an abundant number, since it is smaller than the sum of its proper divisors (4029700).

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

3281660 is a wasteful number, since it uses less digits than its factorization.

3281660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 3281660 is about 1811.5352604904. The cubic root of 3281660 is about 148.6042377880.

The spelling of 3281660 in words is "three million, two hundred eighty-one thousand, six hundred sixty".