3806660 has 60 divisors (see below), whose sum is σ = 9469740. Its totient is φ = 1277760.

The previous prime is 3806659. The next prime is 3806683. The reversal of 3806660 is 666083.

It can be written as a sum of positive squares in 2 ways, for example, as 937024 + 2869636 = 968^2 + 1694^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 292814 + ... + 292826.

It is an arithmetic number, because the mean of its divisors is an integer number (157829).

Almost surely, 2^3806660 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 3806660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4734870).

3806660 is an abundant number, since it is smaller than the sum of its proper divisors (5663080).

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

3806660 is a wasteful number, since it uses less digits than its factorization.

3806660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66 (or 31 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 3806660 is about 1951.0663750882. The cubic root of 3806660 is about 156.1401873750.

The spelling of 3806660 in words is "three million, eight hundred six thousand, six hundred sixty".