3216660 has 24 divisors (see below), whose sum is σ = 9006816. Its totient is φ = 857760.

The previous prime is 3216659. The next prime is 3216667. The reversal of 3216660 is 666123.

It is a self number, because there is not a number n which added to its sum of digits gives 3216660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3216667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26746 + ... + 26865.

It is an arithmetic number, because the mean of its divisors is an integer number (375284).

Almost surely, 2^3216660 is an apocalyptic number.

3216660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3216660 is an abundant number, since it is smaller than the sum of its proper divisors (5790156).

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

3216660 is a wasteful number, since it uses less digits than its factorization.

3216660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53623 (or 53621 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 3216660 is about 1793.5049484180. The cubic root of 3216660 is about 147.6165506077.

The spelling of 3216660 in words is "three million, two hundred sixteen thousand, six hundred sixty".