3866560 has 56 divisors (see below), whose sum is σ = 9454896. Its totient is φ = 1505280.

The previous prime is 3866543. The next prime is 3866581. The reversal of 3866560 is 656683.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13620 + ... + 13900.

Almost surely, 2^3866560 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 3866560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4727448).

3866560 is an abundant number, since it is smaller than the sum of its proper divisors (5588336).

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

3866560 is a wasteful number, since it uses less digits than its factorization.

3866560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 3866560 is about 1966.3570377732. The cubic root of 3866560 is about 156.9549142315.

The spelling of 3866560 in words is "three million, eight hundred sixty-six thousand, five hundred sixty".