3111666 has 8 divisors (see below), whose sum is σ = 6223344. Its totient is φ = 1037220.

The previous prime is 3111659. The next prime is 3111673. The reversal of 3111666 is 6661113.

It is an interprime number because it is at equal distance from previous prime (3111659) and next prime (3111673).

It is a sphenic number, since it is the product of 3 distinct primes.

3111666 is an admirable number.

It is a nude number because it is divisible by every one of its digits.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259300 + ... + 259311.

It is an arithmetic number, because the mean of its divisors is an integer number (777918).

Almost surely, 2^3111666 is an apocalyptic number.

3111666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3111666 is a wasteful number, since it uses less digits than its factorization.

3111666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518616.

The product of its digits is 648, while the sum is 24.

The square root of 3111666 is about 1763.9914965781. The cubic root of 3111666 is about 145.9926499083.

Adding to 3111666 its reverse (6661113), we get a palindrome (9772779).

The spelling of 3111666 in words is "three million, one hundred eleven thousand, six hundred sixty-six".