4156866 has 48 divisors (see below), whose sum is σ = 10752480. Its totient is φ = 1186920.

The previous prime is 4156847. The next prime is 4156871. The reversal of 4156866 is 6686514.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4156866.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1861 + ... + 3431.

It is an arithmetic number, because the mean of its divisors is an integer number (224010).

Almost surely, 2^4156866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4156866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5376240).

4156866 is an abundant number, since it is smaller than the sum of its proper divisors (6595614).

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

4156866 is a wasteful number, since it uses less digits than its factorization.

4156866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596 (or 1583 counting only the distinct ones).

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

The square root of 4156866 is about 2038.8393757234. The cubic root of 4156866 is about 160.7886325223.

The spelling of 4156866 in words is "four million, one hundred fifty-six thousand, eight hundred sixty-six".