3321660 has 96 divisors (see below), whose sum is σ = 10160640. Its totient is φ = 808192.

The previous prime is 3321653. The next prime is 3321667. The reversal of 3321660 is 661233.

It is an interprime number because it is at equal distance from previous prime (3321653) and next prime (3321667).

It is a super-2 number, since 2×3321660² = 22066850311200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3321667) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 39979 + ... + 40061.

It is an arithmetic number, because the mean of its divisors is an integer number (105840).

Almost surely, 2^3321660 is an apocalyptic number.

3321660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3321660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5080320).

3321660 is an abundant number, since it is smaller than the sum of its proper divisors (6838980).

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

3321660 is a wasteful number, since it uses less digits than its factorization.

3321660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 3321660 is about 1822.5421805818. The cubic root of 3321660 is about 149.2055778282.

Adding to 3321660 its reverse (661233), we get a palindrome (3982893).

The spelling of 3321660 in words is "three million, three hundred twenty-one thousand, six hundred sixty".