4165866 has 24 divisors (see below), whose sum is σ = 9079200. Its totient is φ = 1380456.

The previous prime is 4165849. The next prime is 4165927. The reversal of 4165866 is 6685614.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 4165866.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3001 + ... + 4163.

It is an arithmetic number, because the mean of its divisors is an integer number (378300).

Almost surely, 2^4165866 is an apocalyptic number.

4165866 is an abundant number, since it is smaller than the sum of its proper divisors (4913334).

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

4165866 is a wasteful number, since it uses less digits than its factorization.

4165866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370 (or 1367 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 4165866 is about 2041.0453204179. The cubic root of 4165866 is about 160.9045896384.

The spelling of 4165866 in words is "four million, one hundred sixty-five thousand, eight hundred sixty-six".