4155666 has 16 divisors (see below), whose sum is σ = 8390304. Its totient is φ = 1372064.

The previous prime is 4155659. The next prime is 4155673. The reversal of 4155666 is 6665514.

It is an interprime number because it is at equal distance from previous prime (4155659) and next prime (4155673).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2595 + ... + 3878.

It is an arithmetic number, because the mean of its divisors is an integer number (524394).

Almost surely, 2^4155666 is an apocalyptic number.

4155666 is an abundant number, since it is smaller than the sum of its proper divisors (4234638).

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

4155666 is a wasteful number, since it uses less digits than its factorization.

4155666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6585.

The product of its digits is 21600, while the sum is 33.

The square root of 4155666 is about 2038.5450694061. The cubic root of 4155666 is about 160.7731589317.

The spelling of 4155666 in words is "four million, one hundred fifty-five thousand, six hundred sixty-six".