3840660 has 72 divisors (see below), whose sum is σ = 12274080. Its totient is φ = 969408.

The previous prime is 3840649. The next prime is 3840667. The reversal of 3840660 is 660483.

3840660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3840667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2859 + ... + 3981.

Almost surely, 2^3840660 is an apocalyptic number.

3840660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3840660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6137040).

3840660 is an abundant number, since it is smaller than the sum of its proper divisors (8433420).

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

3840660 is a wasteful number, since it uses less digits than its factorization.

3840660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157 (or 1152 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 3840660 is about 1959.7601894109. The cubic root of 3840660 is about 156.6036767045.

The spelling of 3840660 in words is "three million, eight hundred forty thousand, six hundred sixty".