3886666 has 16 divisors (see below), whose sum is σ = 6755904. Its totient is φ = 1642464.

The previous prime is 3886661. The next prime is 3886679. The reversal of 3886666 is 6666883.

It is an Ulam number.

3886666 is a modest number, since divided by 6666 gives 388 as remainder.

It is not an unprimeable number, because it can be changed into a prime (3886661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 880 + ... + 2923.

It is an arithmetic number, because the mean of its divisors is an integer number (422244).

Almost surely, 2^3886666 is an apocalyptic number.

3886666 is a deficient number, since it is larger than the sum of its proper divisors (2869238).

3886666 is a wasteful number, since it uses less digits than its factorization.

3886666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3885.

The product of its digits is 248832, while the sum is 43.

The square root of 3886666 is about 1971.4629086037. The cubic root of 3886666 is about 157.2264977012.

The spelling of 3886666 in words is "three million, eight hundred eighty-six thousand, six hundred sixty-six".