6858866 has 16 divisors (see below), whose sum is σ = 11791680. Its totient is φ = 2931120.

The previous prime is 6858827. The next prime is 6858869. The reversal of 6858866 is 6688586.

It is a self number, because there is not a number n which added to its sum of digits gives 6858866.

It is not an unprimeable number, because it can be changed into a prime (6858869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9320 + ... + 10028.

It is an arithmetic number, because the mean of its divisors is an integer number (736980).

Almost surely, 2^6858866 is an apocalyptic number.

6858866 is a deficient number, since it is larger than the sum of its proper divisors (4932814).

6858866 is a wasteful number, since it uses less digits than its factorization.

6858866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409.

The product of its digits is 552960, while the sum is 47.

The square root of 6858866 is about 2618.9436801886. The cubic root of 6858866 is about 189.9987626882.

The spelling of 6858866 in words is "six million, eight hundred fifty-eight thousand, eight hundred sixty-six".