7066856 has 8 divisors (see below), whose sum is σ = 13250370. Its totient is φ = 3533424.

The previous prime is 7066847. The next prime is 7066859. The reversal of 7066856 is 6586607.

It can be written as a sum of positive squares in only one way, i.e., 5134756 + 1932100 = 2266^2 + 1390^2 .

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7066859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 441671 + ... + 441686.

Almost surely, 2^7066856 is an apocalyptic number.

It is an amenable number.

7066856 is a deficient number, since it is larger than the sum of its proper divisors (6183514).

7066856 is a wasteful number, since it uses less digits than its factorization.

7066856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883363 (or 883359 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 7066856 is about 2658.3558828720. The cubic root of 7066856 is about 191.9001940767.

Subtracting from 7066856 its reverse (6586607), we obtain a square (480249 = 693²).

The spelling of 7066856 in words is "seven million, sixty-six thousand, eight hundred fifty-six".