3855660 has 48 divisors (see below), whose sum is σ = 10886400. Its totient is φ = 1019584.

The previous prime is 3855647. The next prime is 3855667. The reversal of 3855660 is 665583.

It is a super-2 number, since 2×3855660² = 29732228071200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3855667) 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, 10561 + ... + 10919.

It is an arithmetic number, because the mean of its divisors is an integer number (226800).

Almost surely, 2^3855660 is an apocalyptic number.

3855660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3855660 is an abundant number, since it is smaller than the sum of its proper divisors (7030740).

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

3855660 is a wasteful number, since it uses less digits than its factorization.

3855660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 3855660 is about 1963.5834588833. The cubic root of 3855660 is about 156.8072878572.

The spelling of 3855660 in words is "three million, eight hundred fifty-five thousand, six hundred sixty".