2168966 has 4 divisors (see below), whose sum is σ = 3253452. Its totient is φ = 1084482.

The previous prime is 2168953. The next prime is 2168987. The reversal of 2168966 is 6698612.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542240 + ... + 542243.

It is an arithmetic number, because the mean of its divisors is an integer number (813363).

2^2168966 is an apocalyptic number.

2168966 is a deficient number, since it is larger than the sum of its proper divisors (1084486).

2168966 is a wasteful number, since it uses less digits than its factorization.

2168966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084485.

The product of its digits is 31104, while the sum is 38.

The square root of 2168966 is about 1472.7409819788. The cubic root of 2168966 is about 129.4446924718. Note that the first 3 decimals are identical.

The spelling of 2168966 in words is "two million, one hundred sixty-eight thousand, nine hundred sixty-six".