3778866 has 64 divisors (see below), whose sum is σ = 10348800. Its totient is φ = 995328.

The previous prime is 3778861. The next prime is 3778897. The reversal of 3778866 is 6688773.

3778866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×3778866³ (a number of 21 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (3778861) 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 31 ways as a sum of consecutive naturals, for example, 4530 + ... + 5298.

It is an arithmetic number, because the mean of its divisors is an integer number (161700).

Almost surely, 2^3778866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3778866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5174400).

3778866 is an abundant number, since it is smaller than the sum of its proper divisors (6569934).

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

3778866 is a wasteful number, since it uses less digits than its factorization.

3778866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800 (or 794 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 3778866 is about 1943.9305543151. The cubic root of 3778866 is about 155.7592440152.

The spelling of 3778866 in words is "three million, seven hundred seventy-eight thousand, eight hundred sixty-six".