7868216 has 8 divisors (see below), whose sum is σ = 14752920. Its totient is φ = 3934104.

The previous prime is 7868209. The next prime is 7868219. The reversal of 7868216 is 6128687.

It is a tau number, because it is divible by the number of its divisors (8).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 7868216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7868219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491756 + ... + 491771.

It is an arithmetic number, because the mean of its divisors is an integer number (1844115).

Almost surely, 2^7868216 is an apocalyptic number.

It is an amenable number.

7868216 is a deficient number, since it is larger than the sum of its proper divisors (6884704).

7868216 is a wasteful number, since it uses less digits than its factorization.

7868216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983533 (or 983529 counting only the distinct ones).

The product of its digits is 32256, while the sum is 38.

The square root of 7868216 is about 2805.0340461392. The cubic root of 7868216 is about 198.8957139838.

The spelling of 7868216 in words is "seven million, eight hundred sixty-eight thousand, two hundred sixteen".