3688660 has 48 divisors (see below), whose sum is σ = 8648640. Its totient is φ = 1313280.

The previous prime is 3688649. The next prime is 3688661. The reversal of 3688660 is 668863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3688661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6175 + ... + 6745.

It is an arithmetic number, because the mean of its divisors is an integer number (180180).

Almost surely, 2^3688660 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 3688660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4324320).

3688660 is an abundant number, since it is smaller than the sum of its proper divisors (4959980).

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

3688660 is a wasteful number, since it uses less digits than its factorization.

3688660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616 (or 614 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 3688660 is about 1920.5884514908. The cubic root of 3688660 is about 154.5098634619.

The spelling of 3688660 in words is "three million, six hundred eighty-eight thousand, six hundred sixty".